Professionals who create 3D visualizations are called 3D designers or 3D artists. However, this is a general term, because each professional has his own specialization and direction of work.
By specialization, 3D designers are divided into three main categories:
3D modelers are exclusively engaged in modeling objects in 3D, which includes sculpting 3D models, retopology, texturing and many other techniques used in 3D modeling programs and editors. If modelers work in a studio, they often need to interact with a 3D renderer, 3D generalist, texture artist, shading artist, and so on.
3D visualizers create 3D scenes from finished 3D models. They need to know all the intricacies of composition, lighting settings, cameras, and other creative and technical processes. One of their main skills is the correct rendering setting to get the maximum quality with the minimum weight of the final files. A visualizer with developed skills and experience can become a 3D generalist - a generalist who creates CGI independently from start to finish.
3D animators work with ready-made models and scenes, creating a dynamic effect using a scenario of camera movements, changes in poses and states of objects in a scene, working with lighting, composition, visual effects, etc. Among other things, a 3D animator works on a plot video frame by frame, creating a coherent and logical video sequence through editing, sound background, music and voice acting. you can see how it looks live here: https://kevurugames.com/game-art/3d-art/
Animators are divided into motion capture artists (3D Motion Capture Artist), character artists (Character Artist), environment artists (Environment Artist) and motion graphics designers (Motion Graphics Designer).