Thank you for the answers. I think I’m getting some clue as to how to proceed.
“If a Sotapanna attains an anariya jhana, it is unlikely they will lose it before dying. Thus, they will be born in a Brahma realm (not a suddhavasa Brahma realm) and attain Arahanthood from there. Thus Sotapannas with anariya jhana are also Angamis, in the sense that they will not return to kama loka.”
It is a very interesting fact. Thank you for telling me.