So far it's been the following:
- Bang Brave Bang Bravern - Big gay robots. Hilarious show.
- Skip and Loafer - Succeeds more than any anime I've seen at making the characters feel like people.
- Keep Your Hands Off Eizouken - Fun story about making anime.
- Vivy -Fluorite Eye's Song- - The only "robots rebel against humanity" anime I've ever liked.
- ODDTAXI - An excellent story about a guy who gets wrapped up in some shady dealings he'd rather avoid.
There's been some other great stuff too of course but I wouldn't say that anything else I've seen that's been released since 2020 has been ~~overrated~~ underrated.
As for worst it's gonna be hard to beat The Legend of Heroes: Trails of Cold Steel - Northern War and Ex-Arm.