

I mean that an individual folder will always look the same (consistent), and also look distinctly different from any other folder (unique) if that’s how you arranged it. So you could identify a folder instantly.
Everything in list view looks the same at a glance, and most file managers don’t retain a folder window’s size and placement. Modern macOS kiiiind of does but you have to fight it if you don’t want a single-window browsing UI.
Note that even GrapheneOS no longer supports the 5a, since it is no longer getting firmware security patches. You’ll need to install an archived version of GrapheneOS, or go for something else like LineageOS.
With LineageOS, you’ll continue to get OS patches, but you’ll be stuck with an unlocked bootloader, so there’s a security tradeoff there.