Anthropology

Heidelbergensis all descend from Homo erectus. We have a common ancestor and are referred to as hominids or as hominins, indicating that all these groups are closer to humans than to our much older relatives like australopithicines who did not even walk upright.

There are disagreements among scientists about whether or not Neanderthal should be called Sapiens. Neanderthal and Denisovan were very closely related. Denisovan is considered an offshoot of Neanderthal, so if Neanderthal is Homo sapiens, so is Denisovan.

Here's an article about it.

https://www.nhm.ac.uk/discover/are-neanderthals-same-species-as-us.html