For me it's lsb radix, Yeah I know it only works on numbers, but much younger me independently invented it when slinging 3480 mainframe tape as a grave shift operator. The company had invested in mainframes early and by the time I had got there was was slightly disfunctional, they still had mainframe operators and we would run the nightly batch jobs to process orders. While they had a hard drive(the ramac) they never liked to update their programs to use it, so every major step of the process would read a tape and write a new tape(they used the tapes sort of like a massively inefficient version control, so the process could be restarted at any point) at the end of the night we would have to file a couple hundred tapes back in the library. As I hated randomly seeking through the library and was bad at ad hock sorting I put together a manual sorting routine so the numbered tapes could go back in order. What ended up working best for me I found out later was the good ol' LSB radix sort and I have a soft spot for it to this day.