It's actually completely on me, as I said earlier, I didn't make the addon. Yes, I supervised the inclusion of the levels in Remastered and by working with Salahmander we changed them as well so they were consistent with my set of levels, but that's also the reason why, I was personally handling the inclusions of the levels in Remastered.
On the other hand, I had no involvement with Super Golden Souls aside from answering a few questions from Salahmander back when he was working on the set in the first place, so it's not something I'd add, even with permission, to my itch page, since it's the page of projects that I personally worked on.
If you play Super Golden Souls and Remastered's SGS levels, you'll notice a couple of differences, some of those are Salahmander's, some I personally worked on, we actively worked together to put them in officially.