The Panopticon/Are the species in the market really from the Sun-singers of Akhet

Clara: "Where are they from?"

Doctor: "Oh you know, the local system, mostly."

While it's quite likely that the species the Doctor identified are from the local system, he does only say "mostly". I don't think we can assume that all of these species are from the local system. Terraberserkers were said to come from the Cadonian Belt, which could easily be in the Sun-singers of Akhet, but it isn't necessarily.

Also, if Ultramancers were native to the Sun-singers of Akhet, I don't think the Doctor would have been so surprised to see one. It isn't conclusive proof of anything, but I think it is significant evidence to at least doubt that all of the species the Doctor identified were from the local system.

However, I do think it is a reasonable assumption to say that Merry's species and the Vigil are local though due to their strong association with the system.