I had rather have a poke champ with cait like Karma ; I don't think she needs braum,

Kogmaw needs Braum/Janna/Thresh really to protect him. Blitz doesn't fit him at all, but that's my opinion

Jinx I had rather have Taric, you can easily stun + trap and it used to be a really good combo and I still like it though nobody play gems boi.

For Trist, I like a lot Syndra support, mostly because her mid game is really weak and syndra ish really helpful on that trist W/R and syndra Q+E and you're safe against closely everything.

I haven't play much recently, but, that's what I liked ;p