Do you just mean system names?
I easily found info about WH’s, they are all listed at https://esi.evetech.net/latest/universe/systems/?datasource=tranquility like any other system.
If you want to fetch specific system info just use like https://esi.evetech.net/latest/universe/systems/31000542/?datasource=tranquility&language=en
That will show name, planets and other stuff.
I hope this will help you out.
o7 Fly safe
-Rav