I know of two specific examples:

• Flora McDonald is probably the most famous. She aided in Prince Charles escape from Scotland after the 1745 Jacobite Rebellion, and then emigrated with her husband to North Carolina in 1774. She and her husband were loyalists, however, and her husband served in 84th Regiment of Foot, which was raised in North America (initially). She re-emigrated to Scotland after the American Revolutionary War.
• Angus McDonald is less well known, and I'm not sure his status a Jacobite is completely documented. It's noted in a genealogical book (Flora McDonald Williams, The Glengarry McDonalds of Virginia. Louisville: Fetter, 1911), but I can't find any original documentation on that- so maybe slide him into the "apocryphal Jacobite" category.

There may be more, but I think the key would getting folks who are documented to have participated in the 1745 Jacobite Rebellion. There are more than a few officers in the British army (both English and Scottish) that did participate in both conflicts, however.

Further to r/Neptunianbayofpigs's examples, it is notoriously difficult to accurately trace the lives and experiences of former (Scottish) Jacobites in the New World once they left the shores of Britain. Whether that movement across the Atlantic was voluntary or served as punishment via indenture in the wake of the Forty-five, the paper trails of these emigrants is a real challenge for historians to put together. As a result, there has not yet been any study of significant value done on accurately tracing Jacobite sentiment in the decades after the last rising, mostly because it was pretty clear after 1746 that the Stuarts were not going to be able to reclaim the British thrones. Following the lines of genealogy does not necessarily reflect political position in new contexts, so it is important to consider how concepts of loyalty and ideological or sentimental attachment evolved as an individual's fortunes also did – and how much of it was reported or otherwise preserved in writing.

Other than the examples of famous personalities like the ones that Nep offered, you might also like to take a look at Simon Fraser, Master of Lovat, a former marginal Jacobite who lost his father to execution in 1747 and later rose to the rank of major-general in the British army and fought in the American Revolution. On the other side was Hugh Mercer, a prominent Jacobite who joined the British army in the Seven Years' War but who went on to fight against it once again during the Revolution.

Beyond these, the following sources might offer some interest:

• Calum Cunningham, 'Rebels Without a Cause': The External Jacobite Diasporas, 1688-1788

• Duane Meyer, The Highland Scots of North Carolina 1732-1776 (UNC Press, 1961)

• A. Roger Ekirch, Bound For America: The Transportation of British Convicts to the Colonies, 1718-1775 (Clarendon Press, 1987)

• David Parrish, Jacobitism and Anti-Jacobitism in the British Atlantic World, 1688-1727 (Boydell & Brewer, 2017)

A similar question was brought up here some years ago, too, and might be worth a look.

Wishing you all the best with your search!

Yours,
Dr Darren S. Layne
Creator and Curator, The Jacobite Database of 1745