cybereality Yes, but you can have like 10 or 20 real characters in the front, and then fake ones in the back, people might not notice.
In Cyberpunk 2077, I believe there are more than 20 models of inhabitants, and the dubbing models are very visible. AXYZ design (anima) approach seems preferable to me. Let there are much less people (only hundreds, not thousands), but the eye will not cling to repetitive models. However, it is necessary to understand how they did it.