wonho!! jinhwan used to be a trainee from 10-17, focused primarily on dancing (though he trained in other performance facets too, of course), so depending on when he moved from the states, they could have had some sort of interaction there in a dance capacity? otherwise, he doesn't really do it anymore save for in private (dance because no one is watching, lol) or around particular people who know he actually can and will call him out on his little side shuffle swaying in social settings. if that doesn't work (or if it does even), gym buddies and drinking buddies could work.