1st video - definitely MK5706 as carbonblue said.
2nd video - defintely D&G DW0145 as carbonblue said. Fun fact, in that video, she is either wearing the watch upside-down, or the video is flipped.
3rd video - it is actually the MK5020, not the MK8072. The MK5020 is slightly smaller but still midsize, and the face and hour markers are slightly different. The MK8072 is an old model, very hard to find new, but MK5020 is much more common. The pornstar is Candy Alexa, she wears it in other videos as well. Ava Addams and Mariah Milano also wear this watch.
https://pl.pornhub.com/view_video.php?v ... 7eb5f2bfaf
https://www.pornhub.com/view_video.php? ... 6a224f3aad (check 2:03)
