re: Cut-in-half Wedding Cakes? What's the name??

I refer to this cake as half and half cake, or split cake. Doesn’t seem to be a lot of info/tutorials out there. This came up:
Split half and half wedding cake – Cake by Emmazing Bakes …
cakesdecor.com/cakes/206540-split-half-and-half-wedding-cake
Jul 23, 2015 – This was a challenging but fun cake to make. Tags: split cake split wedding cake half and half cake angled cake caulkboard and silhouette …
I would pm these to CD members, and I’m sure they’d be willing to share with you the “how to” of making a cake like this.