I like Raife!
Rhett and Reid are a little too southern (USA) and slightly harsh or stiff sounding to me compared to the playful and cool, Rocky and Rhodi. Maybe if Rhodi were Rhode.
Obv doesn’t really matter what the other siblings are, but I think Raife is closer to the others (it’s a dapper name!), as are others suggested on the thread. I like Raff, Rex, Rylan, Ryder, Roman, Romeo & Riven.