Sure! I'll try and help by giving some insight on which houses I'd probably put them in myself. Actually, as a matter of fact/funny enough, I have a magic school story in the works using NCT where I have a house system to it like with HP (it's not HP based or anything like that though). The houses themselves are different, but they have basic similarities and can kinda counterpart with the HP house (a little), so I'll tell which dreamer for which house I feel could work nicely based on my own story houses:

Mark (Gryffindor), Renjun (Hufflepuff), Jeno (Ravenclaw), Haechan (Ravenclaw), Jaemin (Gryffindor), Chenle (Slytherin), Jisung (Gryffindor).

Although, honestly, I feel there are some others that could work as well, or maybe even better. Mark seems like he could also be a Hufflepuff. Haechan seems like more of his Slytherin type than any of the others tbh lol. Jaemin being Hufflepuff would be another good choice, maybe even a better one. Chenle seems like Gryffindor could work well for him. And Jisung, he can be kinda like an evil maknae sometimes, so Slytherin might be good for him too. Meanwhile I think Renjun and Jeno's are quite perfect in their regard, tho, who really knows.

Like I said, this was just to help give insight of course. I hope I was able to be of some help in helping you to choose which houses the Dream Team would fit into! Good luck to you!