Ok folks this is what I came up with after some research. If I'm incorrect or missing additional model numbers or info, please feel free to add and I'll do an edit...
BUCK KNIVES BUCKLITE MODELS:
422 - 3" Blade, clip point, Black or Maroon (older), 4FG only, similar to 112 FG Ranger metal handle
424 - 2&3/4" Blade, drop point, Black or Maroon (older), no FG at all, similar to a sodbuster or current production 501 Squire metal handle or Buck 55™ metal handle
425 - 1&5/8" Blade, drop point, Black and various other colors) no FG at all, similar to a mini-sodbuster, current production Buck Alumni metal handle (some color handle variations), 503 Knight metal handle (which has a *1&7/8"* Blade), 2017 current re-production of the original model 525 is the exact same but now called "MiniBuck" and often sold as part of Crockett set with modern 482
426 - 3&3/4" Blade, clip or drop point variations, Black, Maroon (older), camouflage (older, model 460), 4FG only, similar to 110 FG Hunter metal handle. From DeSotoSky: "The 110 Ecolite (recently discontinued) is possibly as light as a Bucklite and does not have finger grooves. The handle material is paperstone and came in red and black. (edit... or was it green?)"
442 - 3" Blade, drop point, Black, no 4FG, one FG by front of handle, similar to Copper & Clad SFO drop point 112 Ranger metal handle
444 - 2&3/4" Blade, drop point, Black no 4FG, one FG by front of handle, almost identical to 442 above but with a 1/4" smaller blade
482 - 3" Blade, drop point, Black, no 4FG, one FG by front of handle (2017 "Folding BuckLite MAX small") modern handle, deep carry pocket clip, similar to 442 above but with modern handle, was in 2017 production line but discontinued already, often sold as part of Crockett set with 2017 reproduction 425.
486 - 3&5/8" Blade, drop point, thumb stud, Black, no 4FG, one FG by front of handle (2017 "Folding BuckLite MAX large" LT) modern handle, deep carry pocket clip, similar to 110 Hunter metal handle, currently in production
>>>Anyone have anything else to add I'll edit this post with the new information. Mods can possibly merge this thread with drei3ree's suggestion:
https://www.bladeforums.com/threads/all-about-bucklites-and-selectors.722145/page-45#post-17695737