I wouldn't put too much thought into some of those mock drafts online as they are pretty unreliable and a lot of them are all over the place the only ones I really trust are central scouting, ISS, and the one I trust the most is Bob Mckenzie. They have:
Ritchie: 7, 9, 6
Ehlers: 13, 11, 7
Virtanen: 6, 10, 8
Nylander: 2nd euro, 5, 12