I doubt it but it's also likely Site Staff won't add early access games with very little content, I had the same problem when the run was under 5 minutes that I submitted with the request because not all of the game's levels had been added. Additionally if the pre-release is highly anticipated or part of a big series they're much more likely to accept it because there's a need for the board ASAP.

You might be looking at games that were added by series mods, which is a completely independent process from the support hub request. You can’t necessarily look at other boards to see what will or won’t be accepted.

I think that getting a game approved also got harder over time. Maybe the other early access games weren't added recently.