I mostly read sports manga, so there are a lot of newer ones which were inspired by previous famous ones. For instance, Ahiru no Sora was inspired by Slam Dunk, not only in the basketball aspect, but also with the characters. Most of the characters from the main team in Ahiru no Sora were delinquents... kind of reminds me of Sakuragi and his gang. :)
Apart from sports, I think Danganronpa was kind of similar to Mirai Nikki. Haven't read their manga versions, though... xD
RE: Manga Mondays #21: Share Some Manga Recommendations