So Awokirin is healer, and a x100 lead now, but her leader skill doesn't specifically require any typings.
Still, in terms of donger-healers, we have LKali (also a near guaranteed x100 like Ra?), Valkyrie and Chibi Valk, Amaterasu with her 8cd haste, LZL doing... something.
Supergirl and Rei Sirius are cool options as well, since they give a free TPA and aren't as invasive to the board.
Sandalphon and Sun Quan are as influential as ever. Kushinadahime is a backup plan, as always.
If you're willing to roll with x50 instead, you can pair with Santa Kirin and get a chunky HP bonus and cover red at the same time.
I do like the idea of Sun Quan enhancing the -entire team- to hit x200 for two turns, contrasting with Ra who isn't Healer. But the necessity for two turns of x200 is rare...