I grew up when the internet was already a thing but I didn't really get to use it until I was a teenager. We had a family computer with space cadet pinball on it, and as a small kid I didn't know how to surf the web, I only knew how to play the games like solitaire. I knew you could connect your DS (It's not a Gameboy, mum!) to the internet for online multiplayer, but it was too complicated to figure out without a grownup's help. When I got a bit older, I got My own laptop for schoolwork and discovered the internet. I got hooked on webcomics and Reddit. I had a dumb phone for emergencies, which was later replaced with a smartphone on a prepaid plan, with too little data to use it for the internet. So I browsed the internet from the Ubuntu desktop I built at home. Eventually I got a monthly plan and joined the 21st century, but it was a long way getting there.

Technically I fall into your third group, but I don't have anything in common with these kids.