Ah… I had the same quirk once I didn’t have a Samsung back in 2018/2019, so I tried to set an Experience UI and then One UI style, tried to search an apps in Samsung style, xWidget for clock style, Nova launcher for Samsung icons and theme… that was really cool but not even close to original Galaxy, maybe only when comes to icons…
before that and later in 2020 I had an HTC Sense Home original launcher and their apps installed and I enjoyed Freestyle home screen option to turn any thing on a screen as an app icon… like a lamp would be a Dialer for example, or pillow can be a social… and it was in a single style instead of what Samsung did rn in One UI8, it had an aesthetic.
Now I have set a Nothing ported launcher on my A71 (with, I guess, OS 1 or 2) and an icon pack installed. What’s also not an ideal but just has a bit of its aesthetic.

What the original One UI7 looks like…


And yeah, your try to create a One UI look is… a bit far from original. The Nothing OS is perfect itself, let’s be honest. But your screens are a good piece of customisation game, of course. An xda and so on resources could help to get close a bit more hehe, although rn I don’t see any purpose of doing that, like for what🤷🏼♀️