Battle Shonen
This anime is notorious for starting the Isekai craze with its focus on a video game and swords
Sword Art Online
This Isekai is currently airing and involves a man reincarnated as a child in a world of magic
Mushoku Tensei
This Mecha has models of the mechs that you can build
Gundam
This series follows a young man attempting to become a god via a notebook
Death Note
This series follows 2 student council members outsmarting each other into confessing their love
Kaguya-Sama: Love Is War
This series about magic called alchemy is an extremely high rated series
This Isekai involves a guy being summoned to another world and is forced to use a shield
The Rising Of The Shield Hero
This anime had an extremely controversial ending, with the creator receiving death threats over it
Neon Genesis Evangelion
This series follows a young man going back in time to save a girl who was murdered
Erased
The name of this series is the joining of the 2 main characters names
Horimiya
This firefighter themed series has some insanely strong characters
Fire Force
This Isekai involves a kid who cant die in another world
Re:Zero
This series follows a strike force taking down giant beasts
Darling In The Franxx
This series follows a doctor tracking down a patient he once saved
Monster
This series follows a girl with immense anxiety making friends
Komi Cant Communicate
This series is from the same creator as Hunter X Hunter
Yu Yu Hakusho
This Isekai involves players being trapped in a game and going about life whilst starting new factions and countries
Log Horizon
This Mecha follows a young man attempting to unite the 2 sides of people in his country
This series follows a gender less being dealing with trauma and betrayal
Land Of The Lustrous
This series follows a girl who becomes the god of a shrine
This post apocalyptic series involves humans hunting vampires
This Isekai involves a king being transported to another world
Overlord
This Mecha follows a young boy making his way out from his underground village in a mech with his best friend
Gurren Laggan
This series follows a young man and his group of friends attempting to stop a cult from their childhood
20th Century Boys
This series follows a girl becoming a fashion model with the help of her new fashion designer friends
Paradise Kiss