Difference between silverblue / universal Blue / Bluefin / Aurora / Bazzite ?

Hi ! I'm a little confuse between all immutable versions based on fedora. Is this correct : universal blue = tool to create image, based on fedora atomic desktop ?

With universal blue, they created :

• Bluefin = gnome
• Bluefin-DX = gnome + developper tools
• Aurora = kde
• Aurora-DX = kde + developper tools
• Bazzite = games

What the difference between silverble and bluefin for example, and which are you using ?