I have to ask who creationists think all those later hominids were. We have their bones, buried with their hearths and their tools (and the evidence left from making their tools, and the evidence that they travelled distances to get the best stone for their tools, in one case even a sample of the pitch they made for hafting some weapons) and sometimes even their decorations. These families and tribes walked upright, hunted animals, cooked, cleaned hides (we have the tools they used). Yet no human alive today would mistake them for being one of us - they would look far too different. Who else could they be, if not our ancestors, or at least the cousins of our ancestors?
Note: most of them were far too short for Nephilim, if someone is considering going there.
Note 2: I will really laugh if one of you claims that this is what humans looked like before the flood/split.