Recently i learned about the mod "Villager Contracts" and i found it pretty useful but i found out that the mod comes with the default configuration so it doesn't have the villagers added by mods or even the villagers added by the pack.
Is that intended?
If no, my suggestion is to add them. I already did that to my pack and of course tested them (version 1.46.0 and the current version 1.49.0) so if you decide to add them, here it is:
Necromancer=minecraft:priest;necromancer
Pet Shop Owner=rats:pet_shop_owner;pet_shop_owner
Audiophile=openblocks:radio;audiophile
Brewer=vtt:brewer;brewer
Redstoner=vtt:redstoner;redstoner
Stock Trader=vtt:stock_trader;stock_trader
Tinkerer=vtt:tinkerer;tinkerer
Jam Guy=actuallyadditions:jamguy;actuallyadditions.jammer
Sage=cyclicmagic:sage;sage
Druid=cyclicmagic:druid;druid
Apiarist=forestry:apiarist;apiarist
Arborist=forestry:arborist;arborist
Structural Engineer=immersiveengineering:engineer;immersiveengineering.engineer
Machinist=immersiveengineering:engineer;immersiveengineering.machinist
Electrician=immersiveengineering:engineer;immersiveengineering.electrician
Outfitter=immersiveengineering:engineer;immersiveengineering.outfitter
Gunsmith=immersiveengineering:engineer;immersiveengineering.gunsmith
Alchemist=extrautils2:alchemist;alchemist
Red Mechanic=extrautils2:red_mechanic;red_mechanic
Shady Merchant=extrautils2:shady_merchant;shady_merchant

Thank you! Good idea, i could add them. But in this case, i will need to make contracts harder to craft.