All the rest I'd prefer to just summon as-needed and then dismiss without navigating away from the windows I care about.
sway/niri want me to tile every window into some top-level spot.
Took me a while to admit it, but the usual Windows/macOS/DE "stacking" method is what I want + a few hotkeys to arrange the few windows I care about.
It sounds like the scratchpad may be especially close to what you want.
[1]: https://github.com/esjeon/krohnkite [2]: https://github.com/paulmcauley/klassy