For Korea I would say its Brand New Music with 1 Soloist, a 3 member group and 2 member of a 4 member group who were on Produce 101 (Season 2 and X)
For Japan its besides Lapone Entertainment who was made for Produce 101 Japan and so obvisiously has 22 winner in 2 groups, the company called Dream Passport, because Dream Passport has 1 group with 7 member, 1 soloist and a pre-debut group with 6 member who were all on produce 101 (11 apeared on Japan season 1 and 2 apeared on X aswell as one apeared on Japan season 1 and X )
Any other company comes to your mind?
