I've had Crunchyroll for a few months now and after finishing Ranking of Kings, I'm currently watching Witch from Mercury and Chainsaw Man of course. I have Odd Taxi and Mob Psycho 100 on my list, but is there anything else I should be watching? I've already seen Jujutsu Taisen.
Depends on what you want in a show.
If you are OK with "4 high school girls do stuff" as a premise,
A Place Further than the Universe is stellar and
Bocchi the Rock seems to be in the same ballpark. The former is about kids trying to get into an Antarctic expedition for various reasons, and the latter is about a socially anxious girl joining a band and starting to conquer her fears.
Spy X Family is solid goofy action fun with some really funny characters.
Welcome to Demon School, Iruma-Kun is another strong comedy shounen.
There's a million isekai shows, and most of them are derivative garbage.
Ascendance of a Bookworm is a strong one, though, even if it's on a shoestring budget, mostly on the charisma of its book gremlin of a lead character. (Speaking of shoestring budgets,
Planet With is a short and fun mecha that does more with its brief 12 episodes than a lot of shows do with multiple seasons, but beware the janky CG.)
On the other end of the budget spectrum,
Lycoris Recoil has some great action scenes and a fun main duo. The overarching plot is pretty flimsy, and it's certainly not universally loved here, but I found it to be a fun time. Also has surprisingly good representation for an anime.
Eighty-Six has a pseudo-WW2 setting, mecha, and a Sawano soundtrack. Per that WW2 setting, you will have to be OK with spending some quality time getting to know the not-zis of this parallel universe, though only a few of them are depicted at all sympathetically.
For romance,
My Dress-Up Darling has one of the better male leads and is elevated by Cloverworks putting the work in on the animation.
Kaguya: Love is War is great fun and I need to get back to it.
There's a gazillion older shows, but at least some of the ones I would most strongly recommend seem to have gone missing these days, sadly. Post more about your tastes and I can probably suggest a few others.