Chimps are classified as hominids.<quoted text>
You said "...and some of those tools indicate other animals had more evolved brains than humans right up until the clock struck 12,000 BP".
Those other tools are what? Rocks. Incidental pieces broke off. Wow.
Those other animals are who? Chimps. Not Hominids. Not ancestral. Not "more evolved brains". Maybe more closely related to godbots. Yeah, I can buy that.
Hominid - the group consisting of all modern and extinct Great Apes (that is, modern humans, chimpanzees, gorillas and orang-utans plus all their immediate ancestors).
Hominin - the group consisting of modern humans, extinct human species and all our immediate ancestors (including members of the genera Homo, Australopithecus, Paranthropus and Ardipithecus).
Chimps are estimated to be about 4 to 8 million years old, The first modern humans are estimated to date back to 200,000 BP via those controversial computer models developed at UC Berkeley for tracking mtDNA ancestry.