Forget all the mainstream crap that even the normies will rave about like it's the second coming. I want to know about the most obscure titles I've probably never heard of or are so old people don't even realise they exist but are actually all really good.
Three picks of mine that might have not made their way on peoples' radars.
https://www.anime-planet.com/anime/heavy-object
https://www.anime-planet.com/anime/jormungand
https://www.anime-planet.com/anime/tytania
I love serious sci-fi a lot or stuff that borders on it, bonus points if it's got good animation with proper battles, these three anime fit the bill for me. Jormungand is more of a military style anime but I often find these anime that fly under the radar often tend to be the better quality ones rather than the more heavily advertised mainstream titles and isekai trash.
I know I'm the one who started the underrated anime thread but lol I did actually enjoy food wars, what I didn't like is how they clearly forced an extra season out of the anime for the sake of extra life when it should have ended the way it did. Seemed like a classic case of meddling from the higher ups to me.
Some mainstream stuff I do enjoy which is unusual for me but it shows you what a medium can do when it's not infested with leftists. I do agree though that when an anime floats under the radar it doesn't have the usual trappings stuff that gets popular does when they try to appeal to the widest possible audience.