The most important thing to know about ordinals is they’re a particular method of sequencing satoshis created by Casey rodarmor. Inscriptions are separate and the method people use to attach data to the blockchain. Combined is where the perceived value is created.

Anyone can create a new or separate method of sequencing satoshis, and that would be an entirely different “brand”

Of “ordinal theory” think like this , Casey numbers his satoshis 1,2,3,4,5. Johnny Ordinal numbers his satoshis 5,4,3,2,1. Now there are competing numbering methods, and two brands of “ordinals” both using inscriptions to attach data to the blockchain