Any suggestions, Moodle gets so tiring to try to manage...
Hi Robert,
You mention "I fix the enrol vs enroll issue". If you're using English (United States) (en_us) language pack you shouldn't need to fix any instances of 'enrol'. If you come across any, let us know so we can fix them in the en_us language pack for everyone.
You also mention "The gray text next to the box always stays at Default English (en). "
The grey text indicates that during the site install process, English (en) was selected as language. After installing the site, the site admin can then go to Site administration > General > Language settings and set the default language for the site to en_us, as shown in this screenshot:

The grey text will remain as 'Default: English (en)', en_us will be the default language for the site, and any en_us customisations will be shown.
It sounds as though most of your sites had en_us selected during the site install process, but not all.