What's a centrist?

I penned this in 2016:

It’s out of date. Bernie and AOC have expanded the US Overton window and now I’m somewhere on the US center-left. Yay! It’s about time.

I’m still a centrist by European standards insofar as I could imagine myself voting Tory or Labour in the UK, depending. In France, I would be a Macron guy.

Hijack: Google gave me absolutely nothing with this search specification.
“measure for measure” centrist far left fringe of the American political spectrum. site:straightdope.com

Duck-Duck Go gave me a lot, none of it helpful. I only found my quote with Ecosia.com “The search engine that plants trees.” Sheesh.

Regarding the OP, never-Trump conservatives who disavow white nationalism might reasonably be characterized as centrist in the existing US political spectrum. Many of them might be considered pretty far right in 2005, but times change.