I have all boys, born in the 90s when we potty trained earlier. We stayed at home for a week and just got on with it, usually between 2 and two and a half. It was unusual for a child to still be in nappies at three.
My eldest was two years two months. I found him with his nappy off, trying to perch on the loo and decided to go for it. It took a couple of weeks.
Second one was two years and four months, it took about a week.
I left the youngest until two years six months and it only took a couple of days. We didn't bother with the potty, went straight to the loo with a child seat. He was dry at night a couple of days later, much earlier than his brothers.