Style 1! I've had only one outlier kitty that I named Gizmo after the mogwai in Gremlins but the rest of my cats have had normal people names and I'm going to continue that so Giz can be the special one (which he very much was. )
Style 1 - only cat I’ve named that had a different type was Freya. Phoebe is an epithet for Greek deities but it’s long been an ordinary name as well. I didn’t name Daisy; she’s the only cat whose shelter name I’ve kept.