Oh, you mean people like Jill Stein? Sure. Notably, she has never been part of the mainstream left.

https://archive.thinkprogress.org/jill-stein-campaign-russia...

https://www.salon.com/2024/09/23/jill-stein-paid-100000-to-a...

https://www.nbcnews.com/politics/national-security/russians-...

https://www.pbssocal.org/shows/democracy-now/clip/why-jill-s...