Request Advice: Who should I Plat next?

[ULFPAM]

NIghtgale Platinum is totally OK by all means;
my 7* Platinum Nightingale at level 75 heals about 8000 health / second to allies below 80% health.

I made a thread about Halo’s Platinum friends just yesterday, wait I’ll find it for you.

EDIT:

Who are the Halo friends?

So I’m getting a Platinum Halo soon. Who are her friends? Savage, Hivemind, Platinum Baron but she gotta work well with other as well, right? What about Mauler? Thinking about his Platinum skill that damages all disoriented enemies, does this trigger Halo’s Platinum flashes? Any other good matchups? Wesson (Silver + Gold thing)?