My comment wasn’t meant to negate yours. Waydroid was great to mention!! It is and can be very useful to accomplish alot. I just wanted to clarify that it, unfortunately, can’t be used as a full replacement for Android or one of its derivatives.
edit: grammar
I use FreeIPA and it works just fine for everything I would need AD for. Your point still stands. I just mean there are good enough alternatives for the Linux environment.