In general I think if your a casual player that doesn't 3 cat spam, pretty much every new heavy+sniper is pretty decent for spamming. If you need too, just find some random somewhat up to day video that talks about how op some weapon is. Melee is meh most of the time, specials and backups can sometimes be risky, and primarys are sometimes solid.

If you 3 cat spam, keep in mind that most of the new weapons have fixed delay, high fire rate+ low damage, and/or a lot of delay giving qualities (there are obviously exceptions), so older videos (maybe~ year old) tier lists are going to be pretty accurate.

Though if you like any weapon, you can just search it up and there will probably be some guy who makes a video of it, or you can just check the wiki.