Rig Manager - list of all available Amp manufacturers

Now I have to guess which Amps could be available in Rig Exchange e.g.

It would be fine to have a list of all available Amp Names additionally, where I can filter my selection with.

Sure I know this site. But it is the same search direction like in Rig Manager (even with fewer tags). Here I actually need to know what amplifier I'm looking for with certain search terms.

I mean the other direction: give me a list of all amp manufacturers you have. Why? - well there were and are so many amplifier manufacturers, of which I only know a fraction. With such a list I could come across unknown amps and try them out.