ArrowOS-A11 (vayu-19/9/2022/vanilla build) Debloat : OK
/system/apex
com.android.cellbroadcast.capex

/system/app
Bluetooth
BluetoothMidiService
CarrierDefaultApp
DDG
NfcNci
PrintRecommendationService
PrintSpooler
SimAppDialog
SimpleCalendar (replaced by fossify equivalent in /product/app)
SimpleGallery (replaced by fossify equivalent in /product/app)
Stk
Traceur

/system/priv-app
BuiltInPrintService
CellBroadcastLegacyApp
DocumentsUI > crDroid A11 DocumentsUI (I hate Downloads at opening) (optional)
FaceUnlock
ManagedProvisioning
MmsService
stats
Tag
Telecom
TelephonyProvider
TeleService
Updater

/product/app
LatinIME > SimpleKeyboard (rkkr)
messaging / Music / OmniJaws > FossifyCalendar / FossifyGallery / OpenCamera (in whatever order)
webview > com.android.webview (mulch 108.0.5399.79) (optional)

/product/priv-app
Contacts
Dialer
GcamGO
HotwordEnrollmentOKGoogle
HotwordEnrollmentXGoogle

/vendor/app
CneApp

/system_ext/app
EVERYONE (but leave the /app folder un-deleted)

/system_ext/priv-app
CarrierConfig
EmergencyInfo
ims
Provision
qcrilmsgtunnel
QuickAccessWallet

Setup
QS : DND,Autorotate,screenshot,ring,flash,caffeine (if only there was camera & mic switch from A12 I would have replaced DND & screenshot with it)
adb shell commands (scuffed edition) : 
settings put global captive_portal_http_url (insert http url of decent captive portal provider that's not Go-ogle)
settings put global captive_portal_https_url (insert https url of decent captive portal provider that's not Go-ogle)
settings put global captive_portal_fallback_url (insert fallback url of decent captive portal provider that's not Go-ogle)
settings put global captive_portal_other_fallback_urls (insert "other_fallback_urls" url of decent captive portal provider that's not Go-ogle)
settings put global ntp_server about:blank (or replace about_blank with any decent ntp server, such as pool.ntp.org if you need network time)
settings put secure show_rotation_suggestions 0

Additional notes : 
- make sure TWRP has r/w access before attempting to debloat. This is especially important for the X3P since TWRP (both official & Nebrassy's unofficial builds) mounts partitions as read-only by default.
- crDroid A11 (last official release) works with AetherSX2/NetherSX2 BIOS now. However, since ArrowOS is actively preferred, I only took its DocumentsUI from /system/priv-app to replace ArrowOS' DocumentsUI (which defaults to Downloads on opening)
- Arrow OS comes with some outdated webview (96.0 AFAIK). I replaced it with Mulch Webview (from back when its package name is still com.android.webview). The better alternative would be to download latest webview, but when your only sources for latest webview (that works out of the box - unlike alternatives like Mulch post-new-package-name) are crap (such as APKMirror)... we're fucked.
- Shattered Pixel Dungeon & Xeonjia's background songs don't reliably play in ArrowOS. Minor issues since we have our own epic tracks (Romantic Mode's "Dreams" & "Resolution" fucking ROCKS - btw brb gotta grab Gundam X from Addvar of Solitude's fjords) but there's that.
- As for me, I'll... probably not downgrade, my A12L crDroid + pre-KernelSU NGK still worked despite my disdain for it nagging me on headphone volume (and all those A12L UI bullshit). I mean - I've come to appreciate the more limited QS options & A12's camera and mic switches.