I know the difference but I don't see any point of going into is it a Firestone RH-5, Kelsey-Hayes type WK-4 or one of the Goodyear styles found on very old cars with Budd centers.That's a split ring wheel.
Split ring and split rim are all multi piece wheels and are all commonly referred to as split rims.
https://www.theautopian.com/vintage-safety-ad-split-rims/