[Samsung Galaxy S10 Guides, News, & Discussion] sixtyfootmalcolm:
This may already be around the place as information but I always struggle to find it in one place, so here in case it helps anyone else is my list of what has been disabled and, where I can work it out, what it probably does:

android.autoinstalls.config.samsung / Installs Samsung bundled apps

com.android.apps.tag / Related to NFC

com.android.backupconfirm / Confirmation dialog for backup/restore

com.android.bips / Related to printing

com.android.bookmarkprovider / Bookmark provider, not required for in-browser bookmarks

com.android.calllogbackup / Backup call log

com.android.captiveportallogin / Auto log in to WiFi at e.g. coffee shops using their portal page

com.android.chrome / Default browser

com.android.dreams.basic / Screensaver while charging

com.android.dreams.phototable / Photo screensaver while charging

com.android.egg / Easter egg

com.android.emergency / Emergency service launcher?

com.android.hotwordenrollment.okgoogle / Screen-off wake up for Ok Google

com.android.hotwordenrollment.xgoogle / Screen-off wake up for Ok Google

com.android.internal.display.cutout.emulation.corner / UI related, doesn't seem to be needed for S10

com.android.internal.display.cutout.emulation.double / UI related, doesn't seem to be needed for S10

com.android.managedprovisioning / Work account container related

com.android.printspooler / Related to printing

com.android.providers.partnerbookmarks / Sponsored bookmarks

com.dsi.ant.plugins.antplus / Related to ANT+ radio

com.dsi.ant.sample.acquirechannels / Related to ANT+ radio

com.dsi.ant.server / Related to ANT+ radio

com.dsi.ant.service.socket / Related to ANT+ radio

com.enhance.gameservice / Gaming related, perhaps helps shut down background apps etc.

com.facebook.appmanager / Facebook related

com.facebook.katana / Facebook related

com.facebook.services / Facebook related

com.facebook.system / Facebook related

com.google.android.apps.docs / Google Docs

com.google.android.apps.photos / Google Photos

com.google.android.apps.restore / Backup related

com.google.android.apps.tachyon /

com.google.android.apps.turbo / Instant apps?

com.google.android.backuptransport / Sync backups to Google Drive?

com.google.android.configupdater / Auto installs apps?

com.google.android.ext.shared /

com.google.android.feedback / Related to Play Store

com.google.android.gm / Google Mail

com.google.android.gms.policy_sidecar_aps /

com.google.android.googlequicksearchbox / Launcher screen search bar

com.google.android.music / Google Music

com.google.android.onetimeinitializer / Android first set up

com.google.android.partnersetup /

com.google.android.printservice.recommendation / Related to printing

com.google.android.setupwizard / Android first set up

com.google.android.syncadapters.calendar / Calendar sync

com.google.android.syncadapters.contacts / Contacts sync

com.google.android.tts / Google Text to Speech

com.google.android.videos / Google Videos

com.google.android.youtube / Youtube

com.hiya.star / 3rd party call blocker

com.linkedin.android / LinkedIn

com.microsoft.office.officehubrow / Microsoft Office

com.microsoft.skydrive / Onedrive

com.osp.app.signin / Samsung account related

com.samsung.SMT / Speech to text - keyboard related?

com.samsung.android.allshare.service.mediashare / MediaShare service

com.samsung.android.app.camera.sticker.facear.preload / Face stickers for camera

com.samsung.android.app.camera.sticker.facearavatar.preload / Face stickers for camera

com.samsung.android.app.camera.sticker.facearexpression.preload / Detects facial expressions for camera

com.samsung.android.app.camera.sticker.facearframe.preload / Finds face outline for camera?

com.samsung.android.app.camera.sticker.stamp.preload / Stamps for camera

com.samsung.android.app.clipboardedge / Edge panel clipboard history (system clipboard works without)

com.samsung.android.app.galaxyfinder / Samsung Finder app (search box in app drawer etc.)

com.samsung.android.app.ledbackcover / For LED phone cases

com.samsung.android.app.mirrorlink / Related to car link

com.samsung.android.app.omcagent / Related to OS features dependent on country?

com.samsung.android.app.routines / Bixby Routines

com.samsung.android.app.sbrowseredge / Samsung Browser

com.samsung.android.app.simplesharing / Simple share

com.samsung.android.app.social / Social hub

com.samsung.android.app.spage / Bixby page

com.samsung.android.app.taskedge / Edge panel task mamager

com.samsung.android.app.watchmanagerstub / Watch manager

com.samsung.android.aremoji / Emoji for camera

com.samsung.android.authfw / Authentication framework, tied to Samsung Account?

com.samsung.android.bbc.bbcagent /

com.samsung.android.beaconmanager / Possibly related to battery usage measurement

com.samsung.android.bio.face.service / Face recognition service

com.samsung.android.bixby.agent.dummy / Bixby service

com.samsung.android.bixby.service / Bixby service

com.samsung.android.bixby.wakeup / Bixby service

com.samsung.android.calendar / Default calendar

com.samsung.android.clipboarduiservice / Unrelated to basic clipboard functionality

com.samsung.android.da.daagent / Dual Messenger related

com.samsung.android.dqagent / Samsung Device Quality Agent (app security?)

com.samsung.android.drivelink.stub / Car Mode

com.samsung.android.dsms / Dual Messenger related

com.samsung.android.easysetup / Easy Mode set up

com.samsung.android.emojiupdater / Emoji updater service

com.samsung.android.fast / Secure Wifi

com.samsung.android.fmm / Find My Mobile

com.samsung.android.game.gamehome / Gaming mode

com.samsung.android.game.gametools / Gaming mode

com.samsung.android.game.gos / Gaming mode

com.samsung.android.hmt.vrsvc / VR related

com.samsung.android.kidsinstaller / Kids mode

com.samsung.android.knox.analytics.uploader / Knox

com.samsung.android.knox.containeragent / Knox

com.samsung.android.knox.containercore / Knox

com.samsung.android.knox.containerdesktop / Knox

com.samsung.android.location / Samsung Location (GPS still works without)

com.samsung.android.lool / McAfee Smart Manager

com.samsung.android.mateagent / Galaxy Friends

com.samsung.android.mdecservice / Call & Message Continuity

com.samsung.android.mdm / Work account container related

com.samsung.android.mobileservice / Samsung Experience

com.samsung.android.net.wifi.wifiguider / WiFi tips

com.samsung.android.networkdiagnostic / WiFi quality?

com.samsung.android.nlphub / Voice to text

com.samsung.android.rubin.app / Personalisation service

com.samsung.android.samsungpass / Samsung Pass

com.samsung.android.samsungpassautofill / Samsung Pass

com.samsung.android.samsungpositioning / Samsung Location (GPS still works without)

com.samsung.android.scloud / Samsung Cloud

com.samsung.android.sdk.handwriting / Handwriting recognition

com.samsung.android.securitylogagent / Device Security?

com.samsung.android.service.livedrawing / Live Drawing

com.samsung.android.service.peoplestripe / Contacts Edge Panel

com.samsung.android.shortcutbackupservice / Shortcut Backup

com.samsung.android.sm.policy / McAfee Smart Manager

com.samsung.android.smartcallprovider / Smart Call

com.samsung.android.smartface / Face recognition service

com.samsung.android.spayfw / Samsung Pay

com.samsung.android.tadownloader / Background update downloader

com.samsung.android.tapack.authfw / Authentication framework, tied to Samsung Account?

com.samsung.android.wellbeing / Nagging As A Service

com.samsung.clipboardsaveservice / Clipboard save (clipboard works without it)

com.samsung.desktopsystemui / Samsung Desktop related

com.samsung.faceservice / Face recognition service

com.samsung.klmsagent / Knox related (lms = License Manager Service?)

com.samsung.knox.securefolder / Secure Folder

com.samsung.safetyinformation / Safety Information

com.samsung.storyservice / Gallery Stories

com.sec.android.app.DataCreate / Automation / Bixby Routines related?

com.sec.android.app.billing / Samsung Billing

com.sec.android.app.chromecustomizations / Chrome related

com.sec.android.app.desktoplauncher / Samsung Desktop related

com.sec.android.app.magnifier / Accessibility tool

com.sec.android.app.myfiles / Default File Manager

com.sec.android.app.personalization / Personalisation service

com.sec.android.app.quicktool / Quick Tools Edge Panel

com.sec.android.app.safetyassurance / Safety assurance

com.sec.android.cover.ledcover / LED cover support

com.sec.android.desktopcommunity / Samsung Desktop related

com.sec.android.desktopmode.uiservice / Samsung Desktop related

com.sec.android.diagmonagent / Diagnostic Monitor / Logger

com.sec.android.easyonehand / One handed mode

com.sec.android.emergencylauncher / Emergency launcher

com.sec.android.emergencymode.service / Emergency mode

com.sec.android.mimage.avatarstickers / Face stickers for camera

com.sec.android.omc / OM Customize

com.sec.android.preloadinstaller / Install bundled apps?

com.sec.android.provider.emergencymode / Emergency Mode

com.sec.android.service.health / S Health

com.sec.android.soagent / Background update downloader

com.sec.android.widgetapp.easymodecontactswidget / Easy Mode widget

com.sec.android.widgetapp.samsungapps / Samsung Apps widget

com.sec.android.widgetapp.webmanual / Web Manual widget

com.sec.automation / Bixby Routines

com.sec.enterprise.knox.attestation / Knox related

com.sec.enterprise.knox.cloudmdm.smdms / Knox related

com.sec.enterprise.knox.shareddevice.keyguard / Knox related

com.sec.enterprise.mdm.services.simpin / Work account container related

com.sec.location.nsflp2 / Samsung Location (GPS still works without)

com.sec.spp.push / Samsung Push?

com.sem.factoryapp / Factory Tests?

com.skms.android.agent / Protocol-specific NFC related

com.wsomacp / Open Mobile Alliance Client Provisioning - cellular network update prep?

com.wssyncmldm / Open Mobile Alliance Device Management (data sync standard)

de.axelspringer.yana.zeropage / Upday​

If anyone has a clue for the packages where I don't have what it is, please do let me know! Obvious disclaimers apply: I may have got the use case wrong, you may disable something you make use of if you disable this whole list, make a backup before you tinker, etc.