I'm posting it here, as from what I understand, this is a surprisingly yet-to-be-developed space. This fits between lower-level tools (Which it relies upon) like WGPU or Vulkan bindings, and higher-level game engine and similar (e.g. Bevy).
Use case: Create programs written in Rust that integrate a UI (EGUI) with 3D. Suited for scientific, or general visuals.