Welcome to the community, although I think you would be better served registering on
The Fandom Post instead of here since most of the community that was once in this place has since migrated over there with a few of us doing double duty. Anyway, in regards to your list, while you might have watched a lot of anime, you ain't seen nothing yet. Based on your list, I can recommend these titles based on you liking the shows on your list. So I will take the titles on your list and suggest something you might like from it. I will omit titles that I have yet to watch.
One Piece, Bleach, Naruto, Fairy Tail, Dragonball, Toriko - Give
Yu Yu Hakusho a try.
Magi: The labyrinth of magic -
12 Kingdoms sounds like something you might like.
Darker than Black - Try
Tiger and Bunny.
Sword Art Online - Definitely check out
Accel World. It's great, and written by the same author.
Gash Bell -
Rozen Maiden would be worth checking out (though I wouldn't recommend the second season)
Pokemon - How does
Digimon sound?
D. Gray-man - It definitely is set up like
Full Metal Alchemist. I would watch Brotherhood over the original.
Black Blood Brothers - If vampires are your thing,
Hellsing, but it is far more bloody and intense.
Trigun - Give
Gungrave a try, although this show is much more intense.
Trinity Blood - Definitely would suggest
Chrono Crusade.
Inuyasha -
Ranma 1/2 as it is also a Rumiko Takahashi work.
Zero no Tsukaima -
Shakugan no Shana for sure.
Infinite Stratos -
Campione! sounds like something you would enjoy if you liked IS.
Witch Hunter Robin -
Ghost in the Shell: Stand Alone Complex sounds like something you might enjoy.
Marchen Awakens Romance (MAR) -
Rave Master looks like something you might like.
Kekkaishi - Give
Nura: The Rise of the Yokai Clan a try.
Blood+ (was okay, pretty brutal) - Try
Ga-Rei Zero. The first two episodes are rough, but the rest of the story is nice.
Sacred Seven - Definitely try out
Eureka 7.
Soul Eater - I would say
Angel Beats since it has lots of craziness in them.
Based on your tastes, here are some more titles that I would recommend:
Air
Bakemonogatari and Nisemonogatari
Clannad
Code Geass (though it's a mecha show, there is a lot more to this show that involves stuff you would like)
Cowboy Bebop
Fate/Zero and Fate/Stay Night
Fruits Basket
Gankutsuou
Kanon
Lucky Star
Melancholy of Haruhi Suzumiya
Ouran High School Host Club
Puella Magi Madoka Magica
R.O.D.
Slayers
Steins;Gate
Tsukuyomi Moon Phase
Wolf's Rain