Solvent sensitive carpets.....which ones are those? I can only think of industrial carpet tiles that have bitchemin (sp) backing
You are getting information overload, most carpet are ok with an appropriate solvent spotter you just need to be able to identify wool, wool mix and the man made fibres. Did the teach you the burn test at Ashby’s ? Even then 98% of carpet cleaner never carry out a burn test.
Get down the carpet shop and get some carpet samples and try to destroy them with all the chemicals you have bought, play around on samples, experiment, practice.
Spill nail varnish , gloss paint, coffee red wine and practice