Yes, openbox is a standalone window manager. I used it as my first standalone window manager years ago before i moved on to tiling.

I think your problem with tiling is a matter of switching mental model, or it's just not for you. But you're right, having like 5 or 8 windows open on a given workspace on a dynamic tiler is not a good experience, which is why i never open more than 3 or 4 windows on a given workspace. I either close what i don't need or send it to another workspace. The benefit of tiling is that you don't have to bother arranging your windows cause it already does it for you, and you can see all windows that are open at a glance. Even in a floating environment i doubt having 8 windows open at once is a good experience. You're gonna be doing a lot of alt-tabbing and clicking the window you want to switch to, or whatever keybind DEs use for that.

Don't make up terms when you don't know what something is called, and especially don't expect those terms to be self-explanatory.

Do you also get that it’s pretty hard to see the 5th or 8th level of fibonnachi tiling and use it to read text?

I use i3 every day, so no, I don't think it's hard to read text in it. Most applications are just fine at half the size of the screen, and terminals can easily do their job as a sixth of the screen depending on what you're running in them. Even less when you have an extra-large screen. IMO it's also better at organizing windows than standard DEs when you have more windows than can be reasonably displayed at the same time, because you can "hide" them with tab mode, with IMO has a smoother, quicker workflow than alt-tabbing in Gnome, KDE etc.

there’s not much flexability

There's all the flexibility. You can even set single windows or entire workspaces/desktops to floating mode, i.e. the normal mode for most standard desktop environments. The issue with Gnome >=3 is that it doesn't have that kind of flexibility, or the flexibility to decide what fraction of screen space you want to give to an application other than 100% and 50% and it's not even lightweight in resource use to make up for the lack of features.

It says here that Openbox is to be used in Gnome or KDE. Can you use it as a standalone WM? I don’t see it in my listing in my little fedora UI testbed VM

I don't think many people use it like that, especially not with such heavy DEs. Since Openbox is a window manager, not a desktop environment (which come with their own window managers), it's unsurprising that it's not mentioned in a list of desktop environments. IDK what the package is called on Fedora, but generally you install a standalone window manager by explicitly installing that window manager. Try something like dnf search openbox.