https://www.mikroe.com/mikropascal-pic
https://www.mikroe.com/mikrobasic-pic
http://www.astrobe.com/default.htm
https://www.ptc.com/en/products/developer-tools/apexada
https://www.ghs.com/products/ada_optimizing_compilers.html
Some examples of non-C languages used in production code for doing stuff with hardware.