This is Noble rom, an android 12 custom rom for the Galaxy Note 9 and S9 by AlexisXDA on XDA. It has some bugs but nothing that's deal breaker, some stuff have
XDA on X: "Chinese Xiaomi Redmi Note 5 (Redmi Note 5 Pro in India) gets a 6GB RAM + 128GB storage model https://t.co/wGU5aZwOwz https://t.co/kmHjr8WpOu" / X
BEST][GCAM7.3][Port For Redmi Note 9 Pro/S][CURTANA][JOYEUSE] | XDA Forums
Xiaomi Redmi Note 9S is the global name for the Redmi Note 9 Pro
Retailer leaks the full specifications and features of Xiaomi's Redmi 9
ROM][11.0][Miatoll][OFFICIAL] AOSPK - The Kraken Project [2021/08/11] | XDA Forums
Redmi Note 9 - Wikipedia
Redmi Note 9 Pro Max Hands-on - The Note 9 Pro on Steroids!
Project Elixir [Custom ROM]
Redmi Note 9S (Curtana) : Receives update to MIUI 14 based on Android 12 (V14.0.4.0.SJWMIXM - Global ROM) - News by Xiaomi Miui Hellas
Xiaomi Redmi 9 is launching soon - Here's what we know so far
Xda article on the banning of users on the Xiaomi Redmi phones : r/TheSilphRoad
Redmi 9 leak touts a MediaTek processor and an early 2020 launch - NotebookCheck.net News
Xiaomi Redmi Note 9S is the global name for the Redmi Note 9 Pro
XDA on X: "Xiaomi Redmi Note 4 gets Android Pie (Android 9) port with everything working https://t.co/gGCB1PBrSB https://t.co/OuoCGjOBbc" / X
Redmi Note 10 Pro Review: Bringing 120Hz and 108MP to the masses
XDA on X: "Pixel Experience based on Android 9 Pie released for Xiaomi Redmi Note 5 Pro https://t.co/MumhWu46Ym https://t.co/EbRARLsrk3" / X