Darling in the Franxx - A dystopian utopia involving a forbidden romance, uses kids to create a perfect world for adults.
Elfen Lied - The romance aspect of this show is similar to DITF
Naruto/Naruto Shippuden (skip fillers) - A show where the MC is an underdog and climbs to the top.
Highschool dxd - if you want basically hentai with a plot
Rising of The Shield hero - New show where the MC is taken into a new world and is an Underdog in the new world
Rascal Does Not Dream of Bunny Girl Senpai - Romance/Supernatural type of show.
Stein's Gate - Mad scientist accidentally makes a time machine and it has unexpected consequences
Yona of The Dawn - Really good sadly no second season, A Princess has to find a way to take control again of her father's nation.
That Time I Got Reincarnated as a Slime - Guy dies becomes a slime in a new world, slightly OP.
Konosuba - Another isekai but with a focus on comedy
Goblin slayer - fantasy show about killing goblins.
Oregairu - Slice of Life/Drama, The main character is an anti-social student who is dragged into becoming a member of a club.
Seven Deadly Sins - Action/Fantasy, Girl goes looking for the members of the 7 Deadly Sins to help her kingdom
Magi: The Labyrnith of Magic/Kingdom of Magic, Action/Fantasy Show is a lot of adventuring and defeating dungeons in the first season, 2nd season involves revolutionizing the kingdom of magic
Anohana - A sad anime that tries to find closure even after many years after a loss of a childhood friend.
Edit: LMK if you want anymore and if you have a strong preference to any genre.