What is your evidence? A quick search on google (and the git commits) would show you that many wayland developers are significant former xorg developers.

1. Kristian Høgsberg the founder of wayland, did all the DRI2 work on xorg before becomming frustrated 2. Peter Hutterer was a main xorg developer and has been behind the wayland input system 3. Adam Jackson, long time xorg maintainer essentially called for moving on to wayland https://ajaxnwnk.blogspot.com/2020/10/on-abandoning-x-server... (I found that he was involved in wayland discussions, but not sure if he contributed code) 4. you already mentioned Daniel Stone

The only main xorg developer not involved in wayland arguably could be Keith Packard, although he made a lot of the changes for xwayland so I'm not sure if it is correct to say he did not have wayland involvement.

So who are the "vast majority of X.org developers"? I think people always read about the couple of names above and then think, "well there must have been hundreds of others", because they thought xorg was like the linux kernel. AFAIK xorg always only had low 10s of active developers.