Japanese, Rosecomb and Sebrights are all very meand'Uccle, OEGB, Serama, Rosecomb, Japanese, Sebright, ect.. That didn't even begin to scratch the surface. And as you probably know, there are bantam counterparts to many standard breeds.
Keeping in mind I've never owned Seramas, and Sebrights have a reputation for terrorizing their flockmates (certainly accurate!), everyone else generally coexists beautifully. Actually, I keep all with my own Silkies.