Adventure Time- Has some cool trippy episode plots, but all-in-all I think it's pretty overrated. The style is meh and the characters are meh. The humor is quite quirky in a bad hipster way and I strongly believe it contributed to the era where cartoons that have action-based plots become treated as campy sitcoms which is pretty cancerous. All in all meh/10.
Star- Stupid. The love triangle thing is retarded. The pacing sucks. The only good thing about it is the attractive girl designs. shit/10.
Steven Universe is the only one I actually like. I know a lot of people here will disagree, but I think it balances pretty well between action, gem lore and slice of life moments. Characters are sjw but that is forgiven simply because they are well written in and the sjw agenda takes a back seat to the plot in a really weird way. 8/10.