Depends on the nature of your project but I can count the number of Obj-C libraries I’d be likely to use in my projects on one hand, and they all play secondary

Depends on the nature of your project but I can count the number of Obj-C libraries I’d be likely to use in my projects on one hand, and they all play secondary roles (e.g. analytics). For almost anything else Foundation/UIKit and third party Swift libraries would be used.