Diamond is Unbreakable 1
As expected of David Production, they know exactly how to present the material in a stylistically interesting way even without a ton of animation resources.
The new Jojo protagonist seems somewhat less appealing at a glance, but I am certainly willing to see what they do with him in the long run.
My Hero Academia 1
This was fun enough and pretty to look at. Sometimes it's okay to just rely on typical superhero genre conventions and execute them well without aiming for something higher.
I am quite tempted to stick around, despite not knowing anything about the manga, although in practice I'll probably end up waiting to marathon the whole thing.
I think the problem might be, it's just not dumb enough and takes itself way too seriously.
In my view, there's a difference between portraying over-the-top theatrics, including exaggerated scenes of drama or comedy plus various in-jokes, and having any underlying pretense of seriousness. The protagonist had ambitious goals, sure, but the direction and general audio/visual framing of the show never gave me the impression you're getting. Quite the contrary. I did find various aspects to be pretty interesting in other ways, beyond any silly writing involved, but if you can't get even a basic level of enjoyment then I'd suggest just moving on to something more in line with your personal tastes.