Mac: Graalv5 installs into graalv4 folder.
 

I just did a fresh install of graalv5 and it installed into ~/.graal/graal4

Could this possibly be configured to install to somewhere else?

What do you mean with installed? It is storing the downloaded files and user configuration into the same folder, that's not a bug, although we can change that somehow in a later version to not confuse.

Well with most mac apps you would either drag an icon or folder into your applications folder after you opened the .dmg file. When i run graal for the first time, it creates the folders ~/.graal and ~/.graal/graal4.