Moira.

She can heal effectively.

She can damage decently.

I can hunt down Widows and other healers in the back and still get back to my team quickly.

She can juke players and make them look silly.

Her survivability is insane with how slippery she can be (invis jump).

She’s fun.

Im only Plat so it might be a different story in higher ranks, but she’s a blast to play.