Many thanks to everyone that responded
Over 3600 Responses.
Link to imgur album with outputs here
Results available as a CSV here
All the images and the (very messy) work in progress XLSX I used for some of the graphs are available as a zip here
Not mentioned in the imgur album, but possibly one of the more important bits is the top three manufacturers.
1. Vortex
2. Ducky
3. Leopold
Honourable mention to IBM that just missed out on a top 10 spot despite not having manufactured keyboards for over 25 years.
The top 3 for people that said they primarily used Deskthority was actually quite different:
1. IBM
2. Cherry
3. Topre/Filco (Joint)
Aaaand the bottom 3 (which was the same across all communities)
1. Razer
2. Corsair
3. Logitech
Other ways in which Deskthority differed from the other communities is that you have fewer artisans, own more keyboards (though I imagine that one or two outliers skew the average!) prefer vintage keyboards, have a much higher vintage keyboard ownership percentage.
I may add more images to the album, I'll post here if I do, if you think of any interesting relationships or possible patterns in the data that you want to explore let me know and I'll see what I can do, or better yet, make the graphs yourself and I'll add them to the album (with attribution, of course)
And finally, congratulations to reddit user /u/Luneth12 winner of the idea23 resin 60% case from busgamer7394.
Post from when the survey was live