I'm not sure about how many know or don't know... From my personal experience, I didn't know about these things for my first 30 years of life and I didn't learn about these things at all...
You probably knew, but mot in a structured form and which puts each type of income in its category. Haven't you heard of people renting out properties or investing in stocks before 30? Haven't you heard about musicians earning royalties? I'm sure you have. It's just that you couldn't place them as one type of income or another.
For example, I don't particularly agree with this classification because there are things included in there as passive which aren't exactly passive (rental income - you need to make repairs, improvements, look for new tenants, deal with troublemakers, etc.), while some things that rightfully go into the portfolio income category that are also passive income for the investor (interest, mutual funds, other types of managed funds, sometimes dividends, if it's a company with a long history of paying good dividends and you don't have to make your homework every time).
Well, all that is true, and it looks like my expectations from the education system are too high... Also, as I didn't grow up in a wealthy family, that's why all that was science fiction for me... lol...
I didn't have a need to "implement it"... 😂
Ah yeah, the education system lacks incredibly in this area. At least they took you in school to create a bank account. They didn't bother over here. Maybe they knew crypto was coming, lol.
All I know is based on self-education too.