Casteism is indian and all the religions in india is having casteism. But casteism among muslims in india is different the lebbai and urdu speaking community in Tamilnadu were distinguished by their linguistic not by caste.
Ansari,Memon,Moplah,Beary are the sect of muslims and all are equal. no one among them is FC,SC all are equal. And can visit any mosques for prayer.
Ahamediyas were aliniated from islam as they dont consider muhammed as their prophet.