So I found this [url=https://forum.zdoom.org/viewtopic.php?f=37&t=56344]3D Models for GZDoom pack,[/url] and noticed that GZDoom 4.3.0+ doesn't seem to support 3D models in the Carmack renderer, despite 4.2.x supporting them in the Carmack renderer just fine.
[b]GZDoom 4.4.2 Carmack[/b]
[imgur]https://imgur.com/a/RqGDvDl[/imgur]
[b]GZDoom 4.4.2 Hardware[/b]
[imgur]https://imgur.com/a/6Ep2rKH[/imgur]
[b]GZDoom 4.2.4a Carmack[/b]
[imgur]https://imgur.com/a/RX3pe1j[/imgur]