100% - you have strong evidence for alterations to the entrance clip specifically. But I still refute any use of a green screen in all three of these promos. Happy to be called wrong but I honestly think it's just a result of bad masking in post.
You can definitely see Mel walking on the rug and physically in the room. What I do notice though is the digital extension of the paint job on the arches, which is why I think it's more likely that they've just filmed in an unfinished space over anything else. You can definitely spot some (bad) digital additions to cover the plywood and/or unfinished paint work. And it's this coloured masking that tracks in / expands as the camera zooms in on Mel. You can see the difference in colour. They've also not feathered said masking enough, which is why Mel's hands get briefly cut off when she waves them during the close-up. For how quick this moment is in the promo, it's only really noticeable when slowed down or paused.
Regarding her hand against the blue arch from your earlier post, after re-watching it in 1080p, I'm gonna say that looks like pixelation artifact from the cap to me, rather than anything to do with the promo itself. The "problems" only become apparent during the second half of the shot.
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I'm also still unconvinced that the Living Room and Diary Room shots are faked, sorry to say.