Good Not mainstream bands/solo artists

I’ve always been a fan of Mainstream and Underground music (Rap and r&b) And i like it except a lot of the new stuff. But i’ve never been able to find any ACTUAL good underground rock artists that don’t sound horrible.

Do you guys have any good rock Underground bands/solo artists that don’t sound like they record their music on a Microphone from shein??

I like grunge, Hard rock, punk rock. If you know any bands similar to Nirvana, Alice in chains, Gnr, green day and chili peppers.