Used to be everyone learned assembly in college.

I imagine that was x86, which was relatively easy but also horrible. Very few people are writing assembly today because you'd need to be able to do x86-64 SIMD, ARM64, and maybe RISC-V, which are all quite a bit more complicated.

MIPS, because of the books provided for computer architecture (Hennessy and Paterson) were written by the MIPs designers. No one I knew of learned X-86, the Dragon compiler book however had all its examples in VAX assembly.

It was MIPS for me, which isn't widely used in industry, but it did the job.