As previously stated the solution is to move .pak files from Workshop Content folder to ConanSandbox\Mods folder
Opting for replacing the modlist.txt from
SteamLibrary\steamapps\workshop\content\440900
to
SteamLibrary\steamapps\common\Conan Exiles\ConanSandbox\Mods/ ← ensure this last one is /
(Mods then show as explorer not steam files in the Funcom Launcher and will retain load order)
for each of the mods then unsubscribing from the mods in the workshop to ensure they don’t trigger a game update if a mod updates as mentioned by many on google alongside setting the game to only update when launched and only launching in offline mode.