my best bet would be to create a collection called ‘boolean_results’ for example and put all in it.
Then you can choose what you should open or not by the collection name.
Note that ( as far as i have understood ) that collections is somewhat unfinished feature ( like many things in 2.8+ )
The thing is that when you want to use blender in a wide project ( with libs and proper objects/mat/scene classication ) you need to rething the whole way you use blender. It’s quite different than when you make a lone scene with plenty of things.
Beware also not to use in you lib several times the same material or in your target scene you’ll have X times the same material duplicated and it will burden your machine making it unusable !
Happy blending !