I know the majority of Blackmoors human inhabitants are of Thonian blood as well as peshwah but what else? I know there were other ethnicities floating about on other continents most likely, were they interactive with Blackmoor? Obvious answer would be the inclusion of the races of the Wilderlands but I'm thinking of stuff that were directly influenced.

So far I know of the:
Peshwah
Thonions
Valemen
Skhandhik/Sea Reavers(I cant remember how you spell it really)
Afridhi

What real life cultures could make their parallels? I want to flesh them out well enough my players understand their rituals an d customs. Mind telling me of any other human groups and what they could be compared too?

The extreme south of the Great Empire lies the Tangor Peninsula, according to Mystara's planetary map, so you would most likely have Tangoro thrown into the mix, as well. I believe Real World Africa was used for their inspiration, at least the Hollow World writeup. I know there was about the culture and various cultural flavor distinctions on the Piazza forums some time back...

Looking across the Yannifar Sea, directly west of Skothar, there would be the native Yannivey/Yannifey on the proto-continent that will (eventually) become Alphatia. Again, about possible RW cultural influences at the Piazza.

As you can see, my take assumes a "Mystara's Blackmoor" approach. Unfortunately, I don't know enough about the "pure" roots of the setting (Arneson's original incarnation) or the Greyhawked incarnation to be of any help there....

I think of the American Indians when I think of the Peshwah.

I think of the Vikings when I think of the Skandaharians.

Thonians are generic Europeans.

I am afraid that I don't have a good reference point for the other human races to share with you.

I kind of got the gypsy feel from the peshwah and kind of played that up, the peshwah don't usually seem to make settlements and with their way of following the horses they have that feel to me as some of the best horse breeders as well.

I've heard the Afridha being described similar to vikings but also similar to middle eastern cultures, what is it? Also noticed the most info regarding their majority of info said the one player who played the high priestess was also in the Tekumel group which also made me think more middle eastern.

Also since the Tangaroo and Oltecs were around this era as well where would they be located? Actively encountering Blackmoor or in their own little world with their own little wars?

Also is there any middle eastern style cultures in Blackmoor/Mystara? What other cultural examples can anyone suggest?

The Peshwa have been compared both to native americans as well as Scythians or Sarmatians. Unlike thd native americans of the old west the Peshwa have been known tl use metal armor and swords or scimitars. Diffent tribes could have different cultural traits too. One tribe is indeed similar to gypsies/Rom.

-Havard

In Gamma World the Gren were a race of what looked like green skin humanoids who abandoned technology after the fallout. They were green skinned and similar to elves, my usual take on them was they were post apocalyptic plant people and always had a shadow culture like elves vs. shadow elves. The Gren were strange, alien, and very natural in their primitive technology and mutations that were plant based.

Yeah Sun Brothers were the greater version of the Sollux.

I see then so the picts could be considered the original stock for Valemen and possibly others. I could see those debased Valemen who refused to serve Thonia or any man besides their own and went off into the wild. This is where they met others like them but of the monstrous breed and with this thing in common they became one group breeding in and out.

I would love to delve into Salik some how, might try and think of a way to do that.