I can confirm that the bundle, that has the 'Plus' in names for apps, gives the base versions of the apps.
My payment went through pretty much instantly, got the 'download' button on the same two apps (because I knowingly bought the other bundle with Raster Master instead), and my links are for the regular apps, without the plus.
Now that I check, there are two different bundles, one with Raster Master, the other with VecDraw. The other person could probably get confused about which bundle they bought?
As for the non-premium only items being available for download from the purchase, I believe it has to do with a listing having both a paid and free option (since I do recall someone from the publishing side on Itch making this known).
It seems to be a recent change made by Itch, that made this complicated?