I do know how you feel. I had a problem (perceived) when they went from AL3 to version 4 which introduced instrument types like SYNTH, PIANO, ORGAN and MULTI. I didn't want to have to click on those to select something I had sorted already but, as it turned out, those PIANO, ORGAN and MULTI were new introductions from the new instruments they created so, SYNTH had all the sounds I sorted out in the first place. Problem solved.
NOW, as far as categorizing, different users here have their own methods.... Here's mine.
I went through every single preset, tried them and did a SAVE AS and created different banks. I wanted to sort the presets by instrument so that if I wanted a GUITAR instrument, I would create a bank called _GUITAR (The underline guarantees that the name is sorted with the others I create) and when I came across a guitar sound, I'd save it as that newly created bank. The following are the banks that I created:
_ARPEGIATOR, _BASS, _BEATS, _BELLS, _BRASS, _CELLO, _CLARINET, _CONTRABASS, _DRUM KIT, _DRUMS, _DRUMS (kick), _DRUMS (metal), _PADS, _PADS (evolving), _FLUTES, _GONG, _HARMONICA, _HIGH HAT, _LEADS, _ORGAN, _PERCUSSION, _PIANO, _SEQUENCER, _FX, _SNARES, _STRINGS (bowed), _STRINGS (plucked), _SYNTH, _TRUMPET, _VOICES, _XYLOPHONE
I also added STYLES which are: _1shot (dies down immediately), _Auto (doesn't stop playing), _Mono (one key press only), _Poly (multiple key press at a time)
And, to add to the sorting process, I go to CONCERTS and create a song. So far I have: TOP ORGANS, TOP SYNTH, TOP BASS
More to come.
I spent a lot of time going through every single preset which comes with Analog Lab 4 (AND THOSE I'VE PURCHASED) in order to sort them into my own bank with styles to sub class. In many cases, there are still too many SYNTHs and PIANOs etc which is why I sub classified using the CONCERT section and pick the best ones in each bank I created.
I'm sure there are many other ways to sub class those thousands of presets. You could create your own STYLES to sub sort by other ways. Example, if you want to assign an instrument by song type, you could add STYLES like: DISCO, JAZZ, RAP, CONCERT etc.
Of course, it will take time to sort everything but once it's done, it'll be much easier to pick and chose the preset you want.
JUST REMEMBER TO BACK UP EVERYTHING YOU DID