What is the state on Third Party parts?

[Eugen]

2: You may submit parts to the tracker that exist as a physical product and fit the above definition.

If LEGO-compatible part exists on sites sharing 3D models for 3D-printing (like Printables, Thingiverse, Tinkercad, etc.), could be LDraw part based on such design be included as Third Party part in Parts Library?

Few examples:

• Printabrick.com parts backup - https://www.thingiverse.com/thing:4787193
  
• LEGO-compatible stand - https://www.printables.com/model/115684-lego-support
  
• Minifig "Joseph Prusa" and custom parts from "Prusa Tower" set (mentioned in Prusa blog)
  • https://www.printables.com/model/24298-lego-jo
    
  • https://www.printables.com/model/24261-p...-set/files
    
• Custom parts by František Hajdekr (youtuber) - https://www.tinkercad.com/things/8JdDizMMpX9
  
• Raspberry-Pi Block - https://machineblocks.com/blocks/raspberry-pi-block