AB, love your work. Your offerings play and sound fantastic.
The survey results may be statistically confounded by the choices offered. Just a caution, as surveys can be tricky.
The fx-pre and fx-post responses may be considered the same question, as responders may not fully grasp fx order.
Same might be said with the Led Zeppelin option, which can be described as a specific studio-work snap shot of Jimmy Page recordings, which include his fx, amps, speakers, studio mics, studio acoustics, recording engineer prowess and technique, tape machine, post-production, etc.
So the results may actually represent four results:
FX blocks: pre and post fx (and specifically so, for one particular rock guitarist);
Single Coil Heaven;
Cleans; and
Other.