Anime similar to FMP, Kanon, Shuffle, etc?

1)Clannad and 2)air are made by the same company or whatever in kanon. Also these three anime are very popular so watch the other two.mmmmm 3)zero no tsukaima is similar to maburaho since they have harem/magician school but has better animation. 4)Da capo would be similar to shuffle but i think da capo is a bit boring.5)rosario vampire and 6)vampire knight resembles karin by vampire and romance all these animes are good