I agree, I myself aren't much of a comic reader in actuality, most if not all of my comic knowledge comes from Wiki and my friends lol. Other then that my knowledge came from the movies, shows, and video games. However, while reading up on this universe it's given me incentive to read certain comic arcs and issue lines which is neat. I've discovered that there's way more male and female heroes and villains then you'll see in the shows, cartoons, games and movies, but aren't generally touched on, though sometimes they're referenced.
Like for example, Enchantress not existing in the MCU, but she's a major player in comics and is Loki's right hand woman in most things. Or Morgan Le Fay, one of, if not the, strongest spellcasters that can put even Dr Strange to shame and has waged war on entire countries and nearly won each time (like when she took over the City of the Dead and waged war across all of Europe with her undead army).
There's a lot of characters not touched on that are awesome, like the entirety of Venoms family lineage that he himself birthed, the various different Sorcerer Supremes before Doctor Strange, the multiple other Dimensional beings, etc etc.