AT Pro Search Coil - List of all available

Was thinking about getting another coil for my AT Pro and I thought it might be helpful to put together a list of everything that is out there.
Maybe I could put it together in spreadsheet form.

Firstly I would need to compile a list of manufacturers.
From there I would be able to build a catalog for each.

So Far I have:

Garrett
NEL
Cors
Detech
Mars

What other manufacturers are there??