[Samsung Galaxy A20 Guides, News, & Discussion] jajk:
Work in progress.....

android
android.auto_generated_rro__
android.autoinstalls.config.samsung
com.android.apps.tag
com.android.backupconfirm
com.android.bluetooth
com.android.bluetoothmidiservice
com.android.bookmarkprovider uninstallable
com.android.calllogbackup
com.android.captiveportallogin needed for WiFi connecting
com.android.carrierconfig
com.android.carrierdefaultapp
com.android.certinstaller
com.android.chrome uninstallable
com.android.companiondevicemanager
com.android.cts.ctsshim needed
com.android.cts.priv.ctsshim needed
com.android.defcontainer
com.android.documentsui
com.android.dreams.basic uninstallable
com.android.dreams.phototable uninstallable
com.android.egg uninstallable
com.android.emergency uninstallable
com.android.externalstorage needed
com.android.htmlviewer
com.android.inputdevices needed
com.android.internal.display.cutout.emulation.corner
com.android.internal.display.cutout.emulation.double
com.android.internal.display.cutout.emulation.tall
com.android.keychain needed
com.android.location.fused needed
com.android.mms.service needed - messaging
com.android.mtp needed
com.android.nfc
com.android.pacprocessor uninstallable
com.android.phone needed
com.android.printspooler uninstallable
com.android.providers.blockednumber
com.android.providers.calendar
com.android.providers.downloads
com.android.providers.downloads.ui
com.android.providers.media
com.android.providers.partnerbookmarks uninstallable
com.android.providers.settings needed
com.android.providers.telephony needed
com.android.providers.userdictionary
com.android.proxyhandler
com.android.se
com.android.server.telecom
com.android.settings
com.android.settings.intelligence
com.android.sharedstoragebackup
com.android.shell
com.android.simappdialog
com.android.statementservice
com.android.stk
com.android.stk2
com.android.storagemanager needed
com.android.systemui needed
com.android.systemui.theme.dark
com.android.traceur
com.android.vending uninstallable - part of Google Play
com.android.vpndialogs
com.android.wallpaper.livepicker uninstallable
com.android.wallpaperbackup
com.android.wallpapercropper
com.diotek.sec.lookup.dictionary uninstallable - dictionary
com.enhance.gameservice uninstallable
com.facebook.orca uninstallable
com.fitbit.FitbitMobile uninstallable
com.google.android.apps.chromecast.app uninstallable
com.google.android.apps.docs uninstallable
com.google.android.apps.docs.editors.docs uninstallable
com.google.android.apps.docs.editors.sheets uninstallable
com.google.android.apps.maps uninstallable
com.google.android.apps.photos uninstallable
com.google.android.apps.restore
com.google.android.apps.turbo
com.google.android.backuptransport
com.google.android.configupdater
com.google.android.ext.services
com.google.android.ext.shared
com.google.android.feedback uninstallable
com.google.android.gm uninstallable
com.google.android.gms uninstallable
com.google.android.gms.policy_sidecar_aps uninstallable
com.google.android.googlequicksearchbox uninstallable
com.google.android.gsf uninstallable
com.google.android.inputmethod.latin uninstallable - keyboard
com.google.android.keep uninstallable
com.google.android.music uninstallable
com.google.android.onetimeinitializer disable
com.google.android.packageinstaller
com.google.android.partnersetup uninstallable
com.google.android.printservice.recommendation uninstallable
com.google.android.projection.gearhead uninstallable
com.google.android.setupwizard disable
com.google.android.syncadapters.contacts uninstallable / disable - needed if Google sync used
com.google.android.tts uninstallable - Google Text to Speech
com.google.android.videos uninstallable
com.google.android.webview needed
com.google.android.youtube uninstallable
com.hiya.star
com.hp.android.printservice uninstallable
com.knox.vpn.proxyhandler
com.microsoft.office.officehubrow uninstallable
com.microsoft.skydrive uninstallable
com.monotype.android.font.foundation
com.monotype.android.font.samsungone
com.osp.app.signin
com.samsung.aasaservice
com.samsung.accessibility
com.samsung.adaptivebrightnessgo
com.samsung.advp.imssettings
com.samsung.android.a20.d01.wallpapermulti
com.samsung.android.aircommandmanager
com.samsung.android.allshare.service.fileshare
com.samsung.android.allshare.service.mediashare
com.samsung.android.app.camera.sticker.facear.preload uninstallable
com.samsung.android.app.camera.sticker.stamp.preload uninstallable
com.samsung.android.app.clockpack
com.samsung.android.app.dofviewer
com.samsung.android.app.galaxyfinder
com.samsung.android.app.notes
com.samsung.android.app.omcagent
com.samsung.android.app.reminder
com.samsung.android.app.simplesharing
com.samsung.android.app.siofviewer
com.samsung.android.app.social
com.samsung.android.app.soundpicker
com.samsung.android.app.telephonyui
com.samsung.android.app.watchmanagerstub
com.samsung.android.authfw
com.samsung.android.bbc.bbcagent
com.samsung.android.beaconmanager
com.samsung.android.bio.face.service
com.samsung.android.bixby.service
com.samsung.android.bluelightfilter
com.samsung.android.calendar
com.samsung.android.clipboarduiservice
com.samsung.android.contacts
com.samsung.android.da.daagent
com.samsung.android.dialer
com.samsung.android.dqagent
com.samsung.android.dsms
com.samsung.android.easysetup
com.samsung.android.email.provider uninstallable
com.samsung.android.emojiupdater uninstallable
com.samsung.android.fmm
com.samsung.android.game.gamehome uninstallable
com.samsung.android.game.gametools uninstallable
com.samsung.android.game.gos uninstallable
com.samsung.android.incallui
com.samsung.android.ipsgeofence
com.samsung.android.keyguardwallpaperupdator
com.samsung.android.kgclient
com.samsung.android.knox.analytics.uploadercom
com.samsung.android.knox.containeragent
com.samsung.android.knox.containercore
com.samsung.android.location
com.samsung.android.lool
com.samsung.android.mateagent uninstallable
com.samsung.android.mdecservice
com.samsung.android.mdm
com.samsung.android.messaging
com.samsung.android.mobileservice
com.samsung.android.MtpApplication
com.samsung.android.net.wifi.wifiguider
com.samsung.android.networkdiagnostic
com.samsung.android.oneconnect
com.samsung.android.provider.filterprovider
com.samsung.android.provider.stickerprovider
com.samsung.android.providers.contacts
com.samsung.android.rubin.app uninstallable - pushes ads
com.samsung.android.samsungpass
com.samsung.android.samsungpassautofill
com.samsung.android.samsungpositioning
com.samsung.android.scloud
com.samsung.android.sdk.handwriting
com.samsung.android.sdm.config
com.samsung.android.securitylogagent
com.samsung.android.setting.multisound
com.samsung.android.SettingsReceiver
com.samsung.android.shortcutbackupservice
com.samsung.android.sm.devicesecurity
com.samsung.android.sm.policy
com.samsung.android.smartcallprovider
com.samsung.android.smartface
com.samsung.android.smartfitting
com.samsung.android.smartmirroring
com.samsung.android.smartswitchassistant
com.samsung.android.spayfw
com.samsung.android.spdclient
com.samsung.android.stickercenter
com.samsung.android.svcagent
com.samsung.android.tadownloader
com.samsung.android.tapack.authfw
com.samsung.android.themecenter
com.samsung.android.themestore
com.samsung.android.timezone.data_P
com.samsung.android.timezone.updater
com.samsung.android.video
com.samsung.android.wallpaper.res
com.samsung.android.wellbeing
com.samsung.app.newtrim
com.samsung.clipboardsaveservice
com.samsung.cmh
com.samsung.crane
com.samsung.faceservice
com.samsung.ims.smk
com.samsung.ipservice
com.samsung.klmsagent
com.samsung.knox.keychain
com.samsung.knox.securefolder
com.samsung.mlp
com.samsung.rcs
com.samsung.safetyinformation
com.samsung.sec.android.application.csc
com.samsung.sec.android.teeris.tui_service
com.samsung.SMT
com.samsung.storyservice
com.samsung.systemui.hidenotch
com.samsung.systemui.hidenotch.withoutcornerround
com.samsung.ucs.agent.boot
com.sec.android.app.billing
com.sec.android.app.bluetoothtest
com.sec.android.app.camera
com.sec.android.app.chromecustomizations uninstallable (along with Chrome)
com.sec.android.app.clockpackage
com.sec.android.app.DataCreate
com.sec.android.app.factorykeystring
com.sec.android.app.fm
com.sec.android.app.hwmoduletest
com.sec.android.app.launcher
com.sec.android.app.magnifier
com.sec.android.app.myfiles
com.sec.android.app.parser
com.sec.android.app.personalization
com.sec.android.app.popupcalculator
com.sec.android.app.ringtoneBR
com.sec.android.app.safetyassurance
com.sec.android.app.samsungapps
com.sec.android.app.sbrowser
com.sec.android.app.SecSetupWizard
com.sec.android.app.servicemodeapp
com.sec.android.app.setupwizardlegalprovider
com.sec.android.app.shealth
com.sec.android.app.simsettingmgr
com.sec.android.app.soundalive
com.sec.android.app.voicenote uninstallable
com.sec.android.app.wlantest
com.sec.android.CarrierCodeChanger
com.sec.android.daemonapp
com.sec.android.diagmonagent
com.sec.android.easyMover
com.sec.android.easyMover.Agent
com.sec.android.easyonehand
com.sec.android.emergencylauncher
com.sec.android.emergencymode.service
com.sec.android.gallery3d
com.sec.android.inputmethod uninstallable - Samsung keyboard
com.sec.android.mimage.photoretouching uninstallable
com.sec.android.preloadinstaller
com.sec.android.provider.badge
com.sec.android.provider.emergencymode
com.sec.android.providers.security
com.sec.android.RilServiceModeApp
com.sec.android.sdhms
com.sec.android.soagent
com.sec.android.splitsound
com.sec.android.uibcvirtualsoftkey
com.sec.android.wallpapercropper2
com.sec.android.widgetapp.easymodecontactswidget
com.sec.android.widgetapp.samsungapps
com.sec.android.widgetapp.webmanual
com.sec.app.RilErrorNotifier
com.sec.automation
com.sec.bcservice
com.sec.enterprise.knox.attestation
com.sec.enterprise.knox.cloudmdm.smdms
com.sec.enterprise.mdm.services.simpin
com.sec.epdg
com.sec.epdgtestapp
com.sec.factory
com.sec.factory.camera
com.sec.factory.cameralyzer
com.sec.hearingadjust
com.sec.ims
com.sec.imslogger
com.sec.imsservice
com.sec.location.nsflp2
com.sec.modem.settings
com.sec.phone
com.sec.spp.push
com.sec.sve
com.sec.unifiedwfc
com.sec.usbsettings
com.sec.vsim.ericssonnsds.webapp
com.sec.vsimservice
com.skms.android.agent
com.spotify.music uninstallable
com.wsomacp
com.wssyncmldm