Everyone, you can do this on the Steam version. You just have to open the Steam console and type "download_depot {APP_ID} {DEPOT_ID} {MANIFEST_ID}"
The App ID of Baldi's Basics Plus is: 1275890
The Depot ID is:
- 1275891 (Windows)
- 1275892 (Linux)
- 1275893 (MacOS)
The Manifest ID is different for each version of the game, for example, the Manifest ID of the v. 0.3.4 is: 6680004671852231648
So for example, if I want to download the V. 0.3.4 on Windows, I have to type: download_depot 1275890 1275891 6680004671852231648
(You can do this for the Steam version of Baldi's Basics Classic Remastered too)
As for Baldi's Basics in Education and Learning, there's this itch.io page that contains all of the versions: https://wowzaboimodderofficial.itch.io/baldis-basics-classic-archive
Hope this helps!