Here are my Top 10 favorites of all time:
10.Shiki - real shame I didn't watch it earlier, I knew about it since like 2016 but was a bit scared when I saw it few times in gifs and images. It's horror and about vampires, has a really interesting story and it's generally just unnerving more than scary , just for me.
9.Umaru Chan - this one was hilarious, I remember watching it in 2015, it was one of my favorites and the main character is you know... relatable to many people.
8.Beyblade- this one shoud be obvious, basically everyone in school had a Bayblade to duel(Pegasus was a must have) and was obsessed even before the anime aired on TV.
7.Dinosaur King - being a dinosaur fanatic I basically grew up on this one, it's basically dinosaurs with superpowers dueling, enough said. It was the best thing ever back then, not to mention those YT videos with epic music in the background.
6.Dragon Ball - one of my first animes, doesn't need an introdution.
5.Yu-Gi-Oh - same as Dragon Ball, everyone was obessed with cards in school just like with Bayblades, Yu-Gi is still one of my favorite anime characters to this day.
4.Death Note - nuff said, L is one of the best characters ever.
3.Naruto - I mean it's Naruto, that's it.
2.Pokemon - my first anime ever, Pika Pika!
1.Danganronpa - self explenatory
Honorable mentions: K-ON, Mirai Nikki, My Hero Academia, Love Live and Spy x Family.
So which are yours?
In no order:
One piece - I'm a manga reader but I'll tune into the anime for emotional parts. I've been a fan of this for about 23 years now. I always recommend the manga over the anime though.
Chainsaw man - I'm a manga reader, I loved seeing it animated, but I think they sort of messed up releasing only 1/3rd of the first arc for season 1. If they finished the first arc in season 1 I bet it would be in everybody's top 10. I always recommend that everybody just read it.
Haibane Renmei - this is a real piece of art. This is a cozy slow burn with a real emotional wallop for people in a certain headspace. This one genuinely made me a better person.
Serial experiments lain - hard to explain without spoiling it. Super good, super 90's. Amazing vibe that I don't think any others have gotten close to replicating.
Mob Psycho 100 - about a psychic boy and his conman father figure. feel good with a good message and a good boy. The characters are fantastic and the animation can get really crazy good. It has some of the best animation I've ever seen. It has a lot of genuine emotion put into it.
Frieren - about an near-immortal elf after the journey has already ended. this one is still airing, but I'm loving it. I like the chill vibe and interesting story. I love how emotionally mature it feels. I'm not a fan of over the top anime emotions and enjoy how down to earth and realistic these characters act.
Restaurant to another world - I like watching fantasy people/creatures eat and enjoy our foods.
Akira - although the movie is about 1/3rd of the story with the ending slapped on, it's still very fun to look at. I wish they had given this story a trilogy of 3x 3 hour movies instead of cutting out characters and only covering the beginning of a wild story. I always recommend people read the manga.
Made in abyss - the author is a weird pedophile but the story and world are so intriguing. It makes me feel dirty watching it but I need to know what's at the bottom of that damn hole. I've been reading it as well and that just makes me feel even dirtier.
Outlaw Star - A rogue with a gun that shoots magic bullets and his weird crew vs a magical taoist space pirate and his weird crew vs. Cyborg brothers all after the greatest treasure in the universe. Its a weird mashup of themes and genres and somehow it all works.
I'm primarily a manga reader and actually watch very little anime. Making that list was actually pretty difficult and my list for favorite manga would be pretty different.