cf. The Gnarly Man[0][1] by L. Sprague de Camp. It's fiction, but addresses that facet of potential interactions between hominid species.
[0] https://en.wikipedia.org/wiki/The_Gnarly_Man
[1] https://www.galacticjourney.org/stories/600411gnarly.htm
When human beings began to grow numerous on the earth and daughters were born to them,
the sons of God saw how beautiful the daughters of human beings were, and so they took for their wives whomever they pleased.
Then the LORD said: My spirit shall not remain in human beings forever, because they are only flesh. Their days shall comprise one hundred and twenty years.
The Nephilim appeared on earth in those days, as well as later, after the sons of God had intercourse with the daughters of human beings, who bore them sons. They were the heroes of old, the men of renown.
Numbers 13:32-33
They spread discouraging reports among the Israelites about the land they had reconnoitered, saying, “The land that we went through and reconnoitered is a land that consumes its inhabitants. And all the people we saw there are huge.
There we saw the Nephilim (the Anakim are from the Nephilim); in our own eyes we seemed like mere grasshoppers, and so we must have seemed to them.”
Hostile othering of populations doesn't stop interbreeding among anatomically modern human subpopulations, so I doubt it would between other interfertile parts of the human family.