Do you mean LXD and Incus? If so, sort of. Incus is a fork of LXD but it diverged quite a bit and due to the LXD licensing change, Incus can't take anything from LXD but LXD can from Incus. Incus is a community project and is a lot more active. They both use LXC under the hood.
Finding a simple GUI is not going to be easy because everyone has a different definition of what "simple" means. It also depends on what you mean by "review" and
"manage". There were a few web UIs for LXD containers and they were ported or used for Incus containers. Some are still maintained and active.
I personally prefer the command line and find it easier and simpler than using graphical interfaces so don't have a recommendation. When the number of containers and servers becomes large enough to warrant anything else, then that's when automation starts.
Mostly I want a quick glance at the state. I don't really do much using cockpit. It is read only for me and I'm using command line to do anything. I like that cockpit is generally mobile friendly because I can use it remotely as all my machines are on tailscale/headscale.
If you haven’t tried this out yet, you can also download terminal apps that let you ssh from your phone, and that’ll be easy to get going with Tailscale already set up.
Finding a simple GUI is not going to be easy because everyone has a different definition of what "simple" means. It also depends on what you mean by "review" and "manage". There were a few web UIs for LXD containers and they were ported or used for Incus containers. Some are still maintained and active.
I personally prefer the command line and find it easier and simpler than using graphical interfaces so don't have a recommendation. When the number of containers and servers becomes large enough to warrant anything else, then that's when automation starts.