These are the apps I’m using on my OnePlus 6T wich is running Android Pie.
I use a combination of touch and an external bluetooth keyboard with my phone.
Since accessible has different meanings to people, your mileage may vary.
I use Google TTS with Talkback & also use the default Gmail app.
Amazing MP3 Recorder
https://play.google.com/store/apps/details?id=com.stereomatch.mp3.audio.recorder
Be My Eyes
https://play.google.com/store/apps/details?id=com.bemyeyes.bemyeyes
Clipper Sync Plugin
https://play.google.com/store/apps/details?id=com.clippersync.android.plugin
Clipper+
https://play.google.com/store/apps/details?id=fi.rojekti.clipper
Contacts
https://play.google.com/store/apps/details?id=com.google.android.contacts
Docs
https://play.google.com/store/apps/details?id=com.google.android.apps.docs.editors.docs
DoorDash
https://play.google.com/store/apps/details?id=com.dd.doordash
Envision AI
https://play.google.com/store/apps/details?id=com.letsenvision.envisionai
File Manager
https://play.google.com/store/apps/details?id=com.oneplus.filemanager
Hangouts
https://play.google.com/store/apps/details?id=com.google.android.talk
Hangouts Dialer
https://play.google.com/store/apps/details?id=com.google.android.apps.hangoutsdialer
Home
https://play.google.com/store/apps/details?id=com.google.android.apps.chromecast.app
LastPass
https://play.google.com/store/apps/details?id=com.lastpass.lpandroid
Lyft
https://play.google.com/store/apps/details?id=me.lyft.android
MacroDroid
https://play.google.com/store/apps/details?id=com.arlosoft.macrodroid
Messages
https://play.google.com/store/apps/details?id=com.google.android.apps.messaging
My App List
https://play.google.com/store/apps/details?id=com.projectsexception.myapplist
Netflix
https://play.google.com/store/apps/details?id=com.netflix.mediaclient
NFC Labeler
https://play.google.com/store/apps/details?id=hu.gersoft.nfclabeler
Nova Launcher
https://play.google.com/store/apps/details?id=com.teslacoilsw.launcher
Nova Launcher Prime
https://play.google.com/store/apps/details?id=com.teslacoilsw.launcher.prime
Pandora
https://play.google.com/store/apps/details?id=com.pandora.android
Podcast Addict
https://play.google.com/store/apps/details?id=com.bambuna.podcastaddict
Podcast Addict – Donate
https://play.google.com/store/apps/details?id=com.bambuna.podcastaddictdonate
Shouter
https://play.google.com/store/apps/details?id=com.bhkapps.proshouter
TapTapSee
https://play.google.com/store/apps/details?id=com.msearcher.taptapsee.android
The Weather Channel
https://play.google.com/store/apps/details?id=com.weather.Weather
Tubi TV
https://play.google.com/store/apps/details?id=com.tubitv
TuneIn Radio Pro
https://play.google.com/store/apps/details?id=radiotime.player
Typing Hero
https://play.google.com/store/apps/details?id=sen.typinghero
Uber
https://play.google.com/store/apps/details?id=com.ubercab
Uber Eats
https://play.google.com/store/apps/details?id=com.ubercab.eats
VLC
https://play.google.com/store/apps/details?id=org.videolan.vlc
Voice
https://play.google.com/store/apps/details?id=com.google.android.apps.googlevoice
Shared by ‘My App List’ https://play.google.com/store/apps/details?id=com.projectsexception.myapplist