Graphic Designing is largely divided into Six categories. Here is a list of Graphic Designing types you should be familiar with:
Digital & Print Media
Logo designs, Business cards, Letterheads, Company profile, Brand guidelines
Brochure, Pamphlet, Booklet, Posters, Banners, Hoardings, signage
Products label/box designing, Product mockups
Creative banners for social media
Short videos