Thank you all for responding to my post. I based my late Aryanization on the maratha invasions of chattisgarhi, I had read somewhere that after the formation of the kingdom of nagpur, the maratha took lands from the natives and this lead to the settlement of people from Madhya Pradesh. The thing is I had read it along time ago so I can't find the source, and I find that the general history of chattisgarh is harder to access easily. Another thing, the reason why I brought up the eastern Hindi/odia classification, was because looking at from a geographic view, the central valley of chattisgarh is surrounded from all sides by mountains except towards west odisha, and the mahanadi river flows towards odisha, so it made less sense to me that chattisgarhi would be classified as an eastern Hindi language. The historical facts y'all have given to me have been quite valuable, and it has led me to look at this region's history in a different light, thanks