Tulsi Gabbard, who was a House member and vice chair of the DNC, and RFK Jr., who is a Kennedy. In the other direction you have Michael Steele, who was chairman of the RNC, and Dick Cheney, who was the Vice President.

What you’re describing is just a party realignment. It’s a much bigger realignment than what you’ve seen in the U.S. for awhile, but every now and then when coalitions will break apart and reform. Many of the original GOP members were former Whig Party members (which was one of the two major parties that existed after the Federalist Party collapsed). Ir would’ve been weird to call the GOP “Temu Whigs” because they had a different coalition with different priorities, despite the overlap.

In the UK, it seems like Reform is prepared to moderate on the economic libertarianism of the Thatcherite Tory Party in order to bring culturally conservative anti-immigration voters into the coalition.