Hi, I installed and happily use Rocky Linux workstation by having downloaded the DVD image and then selecting Workstation as the Base installation during the install process. This installs RL with Gnome.
There are usually added/removed packages/groups when it comes to the live images. I can’t really give you a definitive list of differences, but I can point you to the kickstart for the live image that shows you the packages/groups used for the live image, so you can compare the /root/anaconda-ks.cfg file produced with a regular DVD install and the live image kickstart. See here.
If you look on the Alternative Images download page, you’ll see that those images aren’t officially supported…
Personally I prefer using the most basic image, then adding the features you want either from the installer, or via the repository after the installation. That way your initial iso download is much smaller & faster, you get the packages directly from the online repository, which is usually more uptodate than what you have on the iso, so you save bandwidth as you don’t have to download a huge iso first, & then still do the updates after the installation. The big iso makes sense if you intend to install it on many systems.