Hi,
on F-droid, in 'settings->manage installed app" there is possibility to export installed app list in csv format, but sadely no “import feature” (really usefull when wanting to duplicate phone or share the app you install with someone else), but it’s still possible to import the app, by opening the app list, copy the app name (ex net.osmand.plus) and search for it in f-droid
there is no such feature in App lounge, which could be great because f-droid only report the list of f-droid available app… app lounge could also report play store app, allowing to fully duplicate a phone without any “cloud” account
I think in this case the good ole My App List should be considered.
Sure it is from 2014 but it works very well (at least on A11). Used it on my OP8T when I moved from OOS11 (mostly running FOSS apps to cover disabled Big G apps) to custom ROMs.
Definitely streamlined or semi-automated the re-installation of apps. If one has multiple stores installed one can easily choose between them.