I've done a lot of contracting jobs and I get to see a lot of codebases and had the exact opposite experience, Whenever I see react or vue code, and in particular react, I feel like I have to relearn everything because the combination of external state libraries and to top it with translation specific code and libraries makes it such that each code base is very different from the other. It almost feels like you are learning a new framework altogether. The other issue is not directly related but because there are so many external dependencies, there is this constant slog work to keep everything updated due to constant vulnerabilities that keep popping in our CI tool.

Familiarity wise Angular has been probably the easiest to jump into and maintain long term, but it is a pain to work with due to the amount of ceremony involved to do even the simplest of things.

Svelte codebases due to the very nature of Svelte are simpler and very straightforward to get into, there are some svelte specific things but they aren't too many of them and are simpler to reason about when compared to codebases built on hooks, and even worse are hooks in combination with junior Devs. It is very very easy to write bad react code and you see this way way too often. Most react code out in the wild is badly written, you don't see problems because the browsers and modern computers are performant enough to hide them away but you do notice as the codebase grows and you realize it too late that the very foundation was wrong.

I don't mind Vue and just see svelte as a nicer DSL over it.