How are items sorted in the build/buy catalogue?

I'm currently working on an overhaul of the landscaping items (trees, shrubs, etc.) and everything is going well, only the items are showing up in an apparently random order in the catalogue when I test them in-game. I had thought that things were sorted by price, but unless I have some other value in the Object Catalog or Object Definition files for these objects, that doesn't appear to be the case. I know there's a sort order value for skin and hair colors in CAS, is there something that functions similarly in build/buy mode? Any input would be appreciated!! This isn't a huge issue, I just like things to be organized nicely, especially if I'm going to be releasing this as a mod

Also, maybe I should make a separate thread for this, but is there a quicker way to apply a small change to the Catalog or Definition files for multiple packages at once? I'm adding in a lot of "world" objects and changing the DevCategoryFlag for each and every one of them is VERY tedious.