So, I’m aware of Syncthing for much of the media, which may help after getting things migrated, but I’m wondering if there may be something more like Clonezilla (or the like) for smartphones to more easily copy over apps & media in bulk.
I also know that the Play Store keeps track of installed apps and I can go through it to individually reinstall each one, but I imagine there must be a much better way.
A lot of brands have their own migration, like Samsung and OnePlus. Their apps will auto move over all contacts, files, apps, settings. What brand are you moving to, they might have one?