If you mean gravel frames, look wise the GR201 / Noah is the closest thing imo.
Geometry wise they have similar wheelbase and stack/reach, but the Mog has a sloping top tube compared to the GR201 that's almost straight.
If you're really after a 29er, I doubt you'll find something close to it. Maybe some old hard tail frame but it'll surely have a longer wheelbase imo
