Originally Leopold had a plant in China that made most of their boards. However, they had trouble with the plant selling off-brand Leopold boards without their name. If I recall, they then moved their plant to Taiwan and Varmilo was formed as the name brand of the old manufacturing plant. If you look at the 750R it should say made in Taiwan now.
That aside, if you like those stock key caps and the profile, Varmilo would be the most like the Leopold caps.(Leopold may even still contract Varmilo to make key caps for all I know!)