I ran into the Solutrean angle a few years ago and have been reading as much as I can find about it. I have been long convinced that there were several very early migrations to the Americas. I know that there is DNA evidence of 25k old European genes as well as Polynesian and Chinese and Phoenician and lots of etc.
Phoenicians! That was how I got started on this angle. Back in 7th grade.
https://en.wikipedia.org/wiki/Theory_of_Phoenician_discovery_of_the_Americas