Written like a true gym parent. Here is a list you might enjoy. To add to it many aerial skiers are former gymnasts. Does anyone know a particular gymnast that is representing their country in a winter discipline this year? If you do please share.
In the past former high level gymnasts have gone on to do great thing in the Olympics in other sports.
ETA. Skater Jason Brown did gymnastics for a while as a child, I don't know how far he got in completion but he did train both, and if you haven't see his free skate from nationals look it up on youtube, its a viral hit with 3.5 million views since mid January.