[OnePlus 8 / 8 Pro & 8T Cross Device Themes, Apps &] tidschi:
You can still debloat with ADB.

Here's my list, but still testing and figuring out:

pm uninstall -k --user 0 android.autoinstalls.config.oneplus
pm uninstall -k --user 0 cn.oneplus.nvbackup
pm uninstall -k --user 0 cn.oneplus.oemtcma
pm uninstall -k --user 0 cn.oneplus.photos
pm uninstall -k --user 0 com.amazon.appmanager
pm uninstall -k --user 0 com.android.apps.tag
pm uninstall -k --user 0 com.android.backup
pm uninstall -k --user 0 com.android.backupconfirm
pm uninstall -k --user 0 com.android.bluetoothmidiservice
pm uninstall -k --user 0 com.android.bookmarkprovider
pm uninstall -k --user 0 com.android.calllogbackup
pm uninstall -k --user 0 com.android.carrierdefaultapp
pm uninstall -k --user 0 com.android.cellbroadcastreceiver
pm uninstall -k --user 0 com.android.cellbroadcastreceiver.basiccolorblack.overlay
pm uninstall -k --user 0 com.android.cellbroadcastreceiver.basiccolorwhite.overlay
pm uninstall -k --user 0 com.android.cellbroadcastreceiver.overlay.common
pm uninstall -k --user 0 com.android.cts.ctsshim
pm uninstall -k --user 0 com.android.cts.priv.ctsshim
pm uninstall -k --user 0 com.android.dreams.basic
pm uninstall -k --user 0 com.android.dynsystem
pm uninstall -k --user 0 com.android.egg
pm uninstall -k --user 0 com.android.emergency
pm uninstall -k --user 0 com.android.emergency.basiccolorblack.overlay
pm uninstall -k --user 0 com.android.emergency.basiccolorwhite.overlay
pm uninstall -k --user 0 com.android.hotwordenrollment.okgoogle
pm uninstall -k --user 0 com.android.hotwordenrollment.xgoogle
pm uninstall -k --user 0 com.android.htmlviewer
pm uninstall -k --user 0 com.android.managedprovisioning
pm uninstall -k --user 0 com.android.providers.partnerbookmarks
pm uninstall -k --user 0 com.android.sharedstoragebackup
pm uninstall -k --user 0 com.android.stk
pm uninstall -k --user 0 com.android.traceur
pm uninstall -k --user 0 com.android.wallpaper.livepicker
pm uninstall -k --user 0 com.android.wallpaperbackup
pm uninstall -k --user 0 com.android.wallpapercropper
pm uninstall -k --user 0 com.dsi.ant.server
pm uninstall -k --user 0 com.epicgames.portal
pm uninstall -k --user 0 com.example.tmo
pm uninstall -k --user 0 com.example.wifirftest
pm uninstall -k --user 0 com.facebook.appmanager
pm uninstall -k --user 0 com.facebook.services
pm uninstall -k --user 0 com.facebook.system
pm uninstall -k --user 0 com.fingerprints.fingerprintsensortest
pm uninstall -k --user 0 com.finshell.atlas
pm uninstall -k --user 0 com.google.android.apps.restore
pm uninstall -k --user 0 com.google.android.apps.tachyon
pm uninstall -k --user 0 com.google.android.apps.turbo
pm uninstall -k --user 0 com.google.android.apps.wellbeing
pm uninstall -k --user 0 com.google.android.apps.work.oobconfig
pm uninstall -k --user 0 com.google.android.as
pm uninstall -k --user 0 com.google.android.cellbroadcastreceiver
pm uninstall -k --user 0 com.google.android.cellbroadcastservice
pm uninstall -k --user 0 com.google.android.feedback
pm uninstall -k --user 0 com.google.android.googlequicksearchbox
pm uninstall -k --user 0 com.google.android.music
pm uninstall -k --user 0 com.google.android.onetimeinitializer
pm uninstall -k --user 0 com.google.android.partnersetup
pm uninstall -k --user 0 com.google.android.printservice.recommendation
pm uninstall -k --user 0 com.google.android.projection.gearhead
pm uninstall -k --user 0 com.google.android.setupwizard
pm uninstall -k --user 0 com.google.android.tag
pm uninstall -k --user 0 com.google.android.tts
pm uninstall -k --user 0 com.google.android.videos
pm uninstall -k --user 0 com.google.android.wallpaper.livepicker
pm uninstall -k --user 0 com.google.ar.core
pm uninstall -k --user 0 com.heytap.cloud
pm uninstall -k --user 0 com.heytap.mcs
pm uninstall -k --user 0 com.heytap.openid
pm uninstall -k --user 0 com.nearme.gamecenter
pm uninstall -k --user 0 com.netflix.mediaclient
pm uninstall -k --user 0 com.netflix.partner.activation
pm uninstall -k --user 0 com.oem.autotest
pm uninstall -k --user 0 com.oem.logkitsdservice
pm uninstall -k --user 0 com.oem.nfc
pm uninstall -k --user 0 com.oem.oemlogkit
pm uninstall -k --user 0 com.oem.rftoolkit
pm uninstall -k --user 0 com.oneplus.account
pm uninstall -k --user 0 com.oneplus.account.basiccolorblack.overlay
pm uninstall -k --user 0 com.oneplus.account.basiccolorwhite.overlay
pm uninstall -k --user 0 com.oneplus.account.overlay
pm uninstall -k --user 0 com.oneplus.android.cellbroadcast.overlay
pm uninstall -k --user 0 com.oneplus.applocker
pm uninstall -k --user 0 com.oneplus.applocker.black.overlay
pm uninstall -k --user 0 com.oneplus.applocker.white.overlay
pm uninstall -k --user 0 com.oneplus.appupgrader
pm uninstall -k --user 0 com.oneplus.backuprestore
pm uninstall -k --user 0 com.oneplus.backuprestore.remoteservice
pm uninstall -k --user 0 com.oneplus.brickmode
pm uninstall -k --user 0 com.oneplus.bttestmode
pm uninstall -k --user 0 com.oneplus.card
pm uninstall -k --user 0 com.oneplus.card.black.overlay
pm uninstall -k --user 0 com.oneplus.card.white.overlay
pm uninstall -k --user 0 com.oneplus.cloud.basiccolorblack.overlay
pm uninstall -k --user 0 com.oneplus.cloud.basiccolorwhite.overlay
pm uninstall -k --user 0 com.oneplus.collectiondata
pm uninstall -k --user 0 com.oneplus.engmode
pm uninstall -k --user 0 com.oneplus.factorymode
pm uninstall -k --user 0 com.oneplus.factorymode.specialtest
pm uninstall -k --user 0 com.oneplus.gameinstaller
pm uninstall -k --user 0 com.oneplus.gamespace
pm uninstall -k --user 0 com.oneplus.gamespace.black.overlay
pm uninstall -k --user 0 com.oneplus.gamespace.white.overlay
pm uninstall -k --user 0 com.oneplus.iconpack.circle
pm uninstall -k --user 0 com.oneplus.iconpack.oneplus
pm uninstall -k --user 0 com.oneplus.iconpack.square
pm uninstall -k --user 0 com.oneplus.ifaaservice
pm uninstall -k --user 0 com.oneplus.instant.translation
pm uninstall -k --user 0 com.oneplus.membership
pm uninstall -k --user 0 com.oneplus.membership.basiccolorblack.overlay
pm uninstall -k --user 0 com.oneplus.membership.basiccolorwhite.overlay
pm uninstall -k --user 0 com.oneplus.note
pm uninstall -k --user 0 com.oneplus.note.black.overlay
pm uninstall -k --user 0 com.oneplus.note.white.overlay
pm uninstall -k --user 0 com.oneplus.opbackup
pm uninstall -k --user 0 com.oneplus.opbackup.black.overlay
pm uninstall -k --user 0 com.oneplus.opbackup.white.overlay
pm uninstall -k --user 0 com.oneplus.opbugreportlite
pm uninstall -k --user 0 com.oneplus.ses
pm uninstall -k --user 0 com.oneplus.setupwizard
pm uninstall -k --user 0 com.oneplus.simcontacts
pm uninstall -k --user 0 com.oneplus.simcontacts.basiccolorblack.overlay
pm uninstall -k --user 0 com.oneplus.simcontacts.basiccolorwhite.overlay
pm uninstall -k --user 0 com.oneplus.sms.smscplugger
pm uninstall -k --user 0 com.oneplus.sound.tuner
pm uninstall -k --user 0 com.oneplus.sound.tuner.basiccolorblack.overlay
pm uninstall -k --user 0 com.oneplus.sound.tuner.basiccolorwhite.overlay
pm uninstall -k --user 0 com.oneplus.soundrecorder.black.overlay
pm uninstall -k --user 0 com.oneplus.soundrecorder.white.overlay
pm uninstall -k --user 0 com.oneplus.soundrecorder
pm uninstall -k --user 0 com.oneplus.tvcast
pm uninstall -k --user 0 com.oneplus.twspods
pm uninstall -k --user 0 com.oneplus.wallpaper
pm uninstall -k --user 0 com.qti.pasrservice
pm uninstall -k --user 0 com.qti.qualcomm.deviceinfo
pm uninstall -k --user 0 com.qti.service.colorservice
pm uninstall -k --user 0 com.qti.snapdragon.qdcm_ff
pm uninstall -k --user 0 com.qualcomm.qti.cne
pm uninstall -k --user 0 com.qualcomm.qti.deviceinfo
pm uninstall -k --user 0 com.qualcomm.qti.dynamicddsservice
pm uninstall -k --user 0 com.qualcomm.qti.performancemode
pm uninstall -k --user 0 com.qualcomm.qti.qdma
pm uninstall -k --user 0 com.qualcomm.qti.remoteSimlockAuth
pm uninstall -k --user 0 com.qualcomm.qti.services.systemhelper
pm uninstall -k --user 0 com.qualcomm.qti.uceShimService
pm uninstall -k --user 0 com.qualcomm.qti.uim
pm uninstall -k --user 0 com.qualcomm.qti.uimGbaApp
pm uninstall -k --user 0 com.qualcomm.qti.workloadclassifier
pm uninstall -k --user 0 com.qualcomm.uimremoteclient
pm uninstall -k --user 0 com.qualcomm.uimremoteserver
pm uninstall -k --user 0 com.quicinc.voice.activation
pm uninstall -k --user 0 com.redteamobile.oneplus.roaming
pm uninstall -k --user 0 com.redteamobile.virtual.softsim
pm uninstall -k --user 0 com.tencent.soter.soterserver
pm uninstall -k --user 0 com.wapi.wapicertmanage
pm uninstall -k --user 0 net.oneplus.commonlogtool
pm uninstall -k --user 0 net.oneplus.forums
pm uninstall -k --user 0 net.oneplus.odm
pm uninstall -k --user 0 net.oneplus.odm.provider
pm uninstall -k --user 0 net.oneplus.provider.appcategoryprovider
pm uninstall -k --user 0 net.oneplus.push
pm uninstall -k --user 0 net.oneplus.wallpaperresources
pm uninstall -k --user 0 net.oneplus.weather
pm uninstall -k --user 0 net.oneplus.weather.basiccolorblack.overlay
pm uninstall -k --user 0 net.oneplus.weather.basiccolorwhite.overlay
pm uninstall -k --user 0 net.oneplus.widget
pm uninstall -k --user 0 org.ifaa.aidl.manager