Which phone is compatible for OTG in SAMSUNG
I'd rewrite that question. Maybe you wanted to ask which Samsungs have OTG. But OTG is a minefield so I'd be very exact in your question.
Nowadays every phone supports OTG whether its a budget or a flagship smartphone. Go for Samsung m30, this is the best budget device from Samsung which provide Type-C and gives a great performance with a bezel=less display.