Maybe Solutrean, but I don’t know. None of the Solutrean points shown on Wikipedia looked close to these. The intact point in the article looked more similar to a Clovis point.
migration along the eastern South American coast shows austral/melanesian dna. The Mayans of the Yucatan had a main god who was a blond with blue eyes who came from the sea and returned (lives in) the sea. it would not be beyond imagination to think of migration of a sea-faring peoples north along the east coast of South America into Central America, along Texas and possibly up the Mississippi valley, Florida and across the Caribbean, even north of there, along the US east coast. perhaps settling from east to west? or Texas west? Consider Oregon:
https://www.theregister.co.uk/2012/07/13/clovis_not_first_says_paisley_caves_excrement/