Comics and manga have been some of my most enduring interests. If you couldn't tell I'm a very Tatsuki Fujimoto-pilled individual. As much as I love to criticize them, Chainsaw Man, Fire Punch, Goodbye Eri and Look Back are some all-time faves for me. Fire Punch especially can be crude and immaturely constructed but it's got a raw emotional intensity that really reaches out to me.
I like shoujo/josei classics too, like Ikeda Riyoko and Yamagishi Ryouko's stuff from the 70s/80s (Rose of Versailles, Oniisama E..., Couple of the White Room, etc...) I love yuri, if it wasn't obvious. Ai Yazawa's late 90s/2000s series are some other heavy hitters, Nana and Paradise Kiss are masterpieces in bittersweetness. For more modern stuff I really like Mori Kaoru's work, especially Emma and Otoyomegatari, because the way she depicts period settings is pretty unmatched (and I have both of her artbooks too because she truly understands being an intellectual maid pervert).
I've liked my fair share of shonen oddballs, like JoJo's Bizarre Adventure and Tokyo Ghoul, but I'm more into the super high-quality underrated gems like Hikara ga Shinda natsu, Witch Hat Atelier and Dungeon Meshi. I also tend to like more strange/intense/cereberal titles like Girls' Last Tour and Dorohedoro.

Finally, here's some recommendations for manga I find severely underrated:
✩ Usotsuki Satsuki wa Shi ga Mieru by Ryouko: a reverse-murder mystery serial, a debate about ethics, and a high school drama rolled into one.
✩ Stigmata by Takahashi Hidebu: some good BL with a highly unique premise and really clean, retro-style art.
✩ Tsubame Tip off! by Watanuki Hiroya: finally, sports manga for girls. everything you could want in a high school basketball drama.
✩ Qualia the Purple by Ueo Hisamitsu & Tsunashima Shirou: potentially the most dialogue-dense graphic work ever, centered on the reality-bending implications of quantum mechanics taken to their extreme.

One of these days I'll find the time to make a page about western comics, but that would have to be like seven times longer than this one because my feelings on the X-Men are deadly serious.