Yes. Conforming loan limits cut off at $417, but certain high-cost counties have a conforming jumbo loan limit that can go up to $729,750 in the contiguous US (higher in Alaska, Hawaii) for 1-unit properties.
Freddie Mac's version is called Super Conforming. Fannie Mae's version is called High Balance.
Super Conforming Mortgages - Freddie Mac
https://www.efanniemae.com/sf/mortga...ancematrix.pdf
Non-conforming loan amount is anything that exceeds the conforming loan limit for that county. So it could be $417,001 in one county and $729,751 in another. It can also be $417,001 in the county with a conforming loan limit of $729,750 - because the non-conforming jumbo loan program would still exist/could still finance loan amounts of $417,001 anywhere in the U.S., it wouldn't be as attractive of terms as a conforming jumbo loan amount of $417,001 however.