Or in Ada. Ada 202x[1] brings enhancements like the parallel block, making parallelism easier to express, somewhat similar to Rust's approach but still with Ada's emphasis on clarity and safety.

[1] https://blog.adacore.com/ada-202x-support-in-gnat (2020)

There may be more enhancements that I may not know about or remember, although I did mention Ada's constructs for safe concurrent code before.