Q: how to I delete some "other" disk space

http://pondini.org/OSX/LionStorage.html

This is Apple's definition of OTHER:

https://support.apple.com/en-us/HT202867

Download from the Internet OmniDiskSweeper and Grand Perspective (both free) and open them. They will show all of your files and the respective sizes. Transfer to an external HDD or delete files you no longer want on your MBP.

Do not forget to empty trash. Only then is space allocated for new data.

Ciao.