Is it possible that there was an abundance of hominidae. A wide of variety as there is breeds of dog. And we just kind of had wars and built alliances. If possible could it be enough to substancially effect our taxonomy history?

Yes to the first - I understand this is the current view. Unlikely to the second. I don't understand the third.

To the second I think it is likely that crossbreeding or interactions between the varying homindae have influenced and resulted in what the homosapien is today. in the sense that we shouldn't cross it out, and at least examine it first. I think it is likely that crossbreeding and even competition between some could have naturally selected the great apes, in enough amounts that it is something anthropologists should investigate. The third one is asking if interactions between multiple homindae, made any substantial impact on the evolutionary history for homosapien.

My interpretation would be that we lack enough data, by an order of magnitude, to answer (or even properly ask) the second and third questions, but that we are approaching the time when we will be able to do so.

I understand that to speak of with any credibility, we stand no where.

 

I'm only speaking hypothetically though. I think it's a very cool concept to look into. Not saying that it's true, only possible.

There are a lot of possibilities for a lot of things. In the absence of data it remains speculation.