I'd suggest checking out 'Re:Zero − Starting Life in Another World'. It shares similarities with Arifureta in terms of the unexpected situations the characters encounter and the growth they undergo throughout the story.
One manga that could be similar is 'Great Teacher Onizuka'. It shares some similarities in terms of the dynamic and unique characters and the school setting.
One manga that could be similar is 'Magi: The Labyrinth of Magic'. It has elements of adventure, magic, and diverse characters like in Aladdin.
Another manga that's somewhat like 'Ippo' is 'Baki'. It features intense combat and the protagonist's journey to become stronger in the fighting world.
I'd say 'The Gamer' is somewhat similar. It has elements of fantasy and power progression like Solo Levelling.
Fairy Tail might be comparable. They both have fantasy settings, and the characters have unique powers and go on exciting quests. Plus, there's a lot of emphasis on friendship and teamwork.
You could try Love Stage!! It has elements of romance and character dynamics that might remind you of Junjou Romantica. The art styles are also somewhat comparable.
Well, 'My Teen Romantic Comedy SNAFU' could be comparable. It has similar themes of youth, relationships, and character development like in 'Quintessential Quintuplets'.
You might want to check out 'Fullmetal Alchemist'. It shares elements of friendship and growth with 'Boys on the Run', and the storylines are both engaging and full of surprises.
One manga that might be similar to Tarzan could be 'Jungle Taitei'. It features a protagonist in a wild jungle setting with similar adventure elements.
One manga that could be similar to Toriko is 'One Piece'. Both feature adventurous quests and unique characters with special powers.