Yes, GLSL or WGSL would be more common languages than SeExpr. But getting the OpenGL working on all platforms is tricky thing. Thats why I have toyed with WebGPU as it is modern and has good backend support + supports GLSL & WGSL. One more alternative is SDL3.0 as it offers Vulcan context, without need to write 3k+ lines of code for management.
/AkiR