Ruy Lopez Riga Variation

A question about the Riga Variation of the Open Ruy Lopez

After 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 exd4 7.Re1 d5 8.Nxd4 Bd6 9.Nxc6 Bxh2+ 10.Kh1 Qh4 11.Rxe4 dxe4 12.Qd8+ Qxd8 13.Nxd8 Kxd8 14.Kxh2 is the move 14..Be6, which seems to always be played, necessary?

Can Black get away with different schemes of development, such as 14..b5 and 15..f5

Does anybody have any ideas on correct play for Black in this endgame? Or where I can find more info? I think this looks playable for Black.

maybe playable against 1400s , but honestly theres gonna be some really prepared players in all ruy lopez continuations, so why play a somewhat questionable(my opinion is that the riga is just terrible) opening then a completely playable, and perhaps better ruy lopez varation?  again i dont recommend ruy lopez for black inless you know theory like your back hand.

Since some comments seem to be missing but this was a top google result, I would add that it's because having two bishops vs. 1 is about half-a-pawn better than one bishop vs. 0, and there's no reason to cede half a pawn.