Is there a way to know how many blueprints you have found vs the total amount of them? I know I’m still missing at least one (yep still moaning about mark of divinity, currenlty farmimg cronley rep to farm elite fabious 5k more rep to go). I’d dare say I must have all but one cause troves havent dropped one in weeks. Getting old and boring farming it. Even though I had another player just craft it for me I’d still like to find blueprint.
Can’t believe you have all blueprints apart from one and still need cronley rep , that’s some going 
I’m 700 hours into the game and missing a hell of a lot , troves stopped dropping them about 200 troves ago , but still need quite a few .
Found a list of all blueprints on Grimwiki, printed it out as a check list, officially lissing 10 legendary bluprints and a couple faction blueprints that I’ll buy when rep is high enough.
Started to keep track of nemesis troves open. 16 so far one blueprint. Out of the three I run to (on elite) Undead, Atherial, Cronley, Fabious is by far the best for legendaries have had 4 drop thus far. The Atherial guy dropped the blueprint (and if memory serves he has dropped the most blueprints) The undead guy is useless unless you need polished emeralds.