How about “historical” parts, i.e. something that could be bought in the past but might be sold out right now?
In a private repo, I once created a complete part (symbol, package, 3D model) for an A210E AF amplifier, once produced by HFO (GDR). It’s somewhat like the TBA810AS which has a slightly different pinout (pin rows with even/odd skew). Can actually still be bought in few pieces on Ebay.
So, shall I keep that one just in my private repository, or would it be OK to upload it to the public pool?