Is there any way to sort a library into groups (bibles, commentaries, dictionaries, etc.)
Sure. Either add the "type" column and sort, or type :"type:bible"
Wiki => https://wiki.logos.com/Library__#Using_the_Find_box_to_filter_your_resource_list_in_the_Library_window has many examples
Logos Help has
Wiki has example canonical commentary collections => https://wiki.logos.com/Canonical_Commentary_Collections
Keep Smiling [:)]