Py 3.11 is more performant than Py 3.12+ on AWS Lambda!
And if you go by the benchmarks, then you should never run Node.js :) But of course, that considers only performance numbers and not familiarity.
By the way, this comes from a great article by Chris, where he benchmarked AWS serverless runtimes on light, CPU-intensive, memory-intensive, and I/O-heavy workloads, and even measured cold starts.
Some pretty interesting numbers. Give it a read.