As far as I know, KH frames were and probably are the only ones that work plug and play with the generation 4 hubs (stop blocks). All others need modifications. I’m not sure how the geometry on Nimbus frames looks like, but Mad4one and QX require modifications.
to fit a Schlumpf hub into a QX-Series frame, you need to make some serious modifications:
Maybe RGB frames fit better, but i doubt they are plug and play without any modification.