It seems shaky trying to apply labels like "low level" or "high level" to Rust, it covers a very broad range of these "levels", just short of C and Zig on the low level end (at least, without becoming substantially less ergonomic), and just short of Haskell at the high level end. Rust definitely gets more attention for its low level characteristics where its safety features set it apart from its peers in that space, but it's still suitable outside that space, just less distinctively suitable, and so less widely discussed.

Some other languages will certainly have more developed ecosystems and frameworks available, but the purpose of things like Dioxus is to provide that. Instead of trying to put things into boxes with labels and deduce from there, you'll get more insight from trying it out and seeing where it works and where it actually struggles.