Tutorial channel about 3D modelling, especially with Blender...but also other interesting modeling techniques with free software, like:
1- Polygonal modeling free software and addons like Polyquilt extension
2- SDF modeling free software like SDF Modeler
3- CAD modeling free software like Macad3D
4- Spline modeling free software and addons ...
5- Voxel or Metaball free software...
Free software and addons, preferably non-destructive modelling procedural, as you expect, ONLY free and effective, fast stuff, NO PAID nor "connected" nor "subscription only" stuff.
Some interesting discussions on Blender and SDF modeling techniques on Blender Artist there : blenderartists.org/t/the-big-sdf-thread/1293075/17…