Xiaomi released a good number of devices with SDM720G SoC, they also have same display, dimensions, battery capacity, similar cameras, etc.
So, a LineageOS developer (Cosmin) who got the device, made unified trees for those devices!
• POCO M2 Pro - Gram
• Note 9S/Indian Note 9pro - Curtana
• Global Note 9Pro - Joyeuse
• Note 9Pro Max - Excalibur
So unified nomenclature goes as:
Mi : Xiaomi (Redmi , Poco)
Atoll : Snapdragon 720G (Platform)
Supported Android versions:
Android 10, 11
on what other ROM is it currently running :
Official: PixelExperience, Derpfest, Havoc, ArrowOS, MSM Extended, and many others
Is it maintained?
Is the current ROM official or unofficial:
URLs in XDA or other forums where the device custom ROM’s are available:
Add details of any known issues if you are aware of: