So I've created such a list, based on the nice SPDX documentation. This list contains 310 license variations and types. I'm explicitly mentioning "types" because you will find licenses called "Proprietary" to define some sort of terms that are customized and a "Public domain" type, which is not a license per se but in practice denotes the lack of an applicable license since copyright (in theory) is not considered as applicable for them.
In case you are ok with these nuances, you can download this json list from https://github.com/triplecheck/engine/blob/master/run/licenseList.js
If you find the list useful and have feedback or need an updated version, just let me know.