Hello,
In the logs there are lines like:
[Notification] Found 163 mods (4 disabled)
[Notification] Mods, sorted by dependency: eightxbackpackcapacity, walkingstick, ancientarmory, bettercrates, canoemode, chiseltools, ClaimsRadar, crawlanddive, decor, floralzonescaperegion, floralzonescaribbeanregion, floralzonescentralaustralianregion, floralzonescosmopolitanregion, floralzoneseastasiaticregion, floralzonesmediterraneanregion, floralzonesneozeylandicregion, fadynasties, fagothic, fagreenwich, fahussar, fatemplar, faviking, bovinae, caninae, capreolinae, casuariidae, cervinae, chelonioidea, dinornithidae, elephantidae, felinae, iniidae, machairodontinae, manidae, meiolaniidae, pantherinae, rhinocerotidae, sirenia, spheniscidae, thylacinidae, viverridae, vombatidae, hotcrops, jsonpatcheslib, longtermfood, manualquenching, millwright, molds, mitsuyoninja, OresAPlenty, overhaullib, particlesplus, plainsandvalleys, playermodellib, primitivesurvival, purpleblackbronze, shelfobsessed, sortablestorage, storagecontroller, temporalsymphony, temporal_gears_stack, usefultraders, game, vsimgui, wildfarmingrevival, windowstorage, abcsredux, aculinaryartillery, ancienttools, animalcages, apelanterns, attributerenderinglibrary, bedspawnv2, betterfirepit, betterjonasdevicesfixed, betterruins, blocksoverlay, bloodtrail, butchering, carryon, commonlib, configlib, cooperativecombatrework, upgradablestorage, danatweaks, darkui, doorvariants, electricalprogressivecore, extrainfo, floatingcombattext, floralzonesxskillsforestrycompat, fluffydreg, foodshelves, fromgoldencombs, herbarium, japanesearchitecture, juicyores, knapster, koboldrdx, landclaimingandgroupinggui, lupines, maltiezfirearms, mechaseraph, millwrightvawtaddon, mobsradar, moldsplus, morepiles, multiclass, nbcartographer, ndlwoodentorchholder, playerlistrevived, insectoid, purposefulstorage, redspecstrashslot, rivers, saltandsands, skeletons, smithingplus, spinningwheel, statushudcont, stepupadvanced, stonebakeoven, substrate, th3dungeon, toolsmith, vanillaarmory, vanity, creative, vsroofing, survival, xlib, xvshaders, zinkmodautoclay, autoconfiglib, electricalprogressivebasics, expandedfoods, em, mannyextrafirearms, extraoverlays, helvehammerext, plushiemodpack, quiversandsheaths, scoopofjammod, stonequarry, storageoptions, wildcraftfruit, xinvtweaks, xskills, zombpspatch, aldiclasses, electricalprogressiveqol, sandwich, xskillscatchablefotsa, xskillsmediterranean, xskillsgilded, xskillsovencompatfix, aldiclassesadvancedfeatures, aldiclassesvanillapatch, electricalprogressiveequipment
But no indication to the user what mods are found but not loaded, an indication of what the mod is and perhaps the reason it was disabled would help in troubleshooting.
[Notification] Mod something_cool disabled: Not on server whitelist
[Notification] Mod something_else disabled: Not in MOD_DB
[Notification] Mod something_weird disabled: Invalid zip file