This is the easiest way I have found to manage the presets of mods. Create an empty mod with just a modDesc.xml file and put the name of each mod you want in the set package surrounded by a <dependency> tag into that file. e.g <dependency>FS25_AutoFOV</dependency> No extra 3rd party programs needed, no mess with multiple directories, no mod duplicates, you can create as many sets as you want. For example i have set with basic script mods, with big machines, with old machines etc, i can select multiple sets and mix them up as i want when starting save.
Basically you create one extra mod that is working as mod selector using builtin giants engine function.