I agree that there are those types of investors who classify themselves as angel investors, venture capitalist,¹ etc. But before they become all of these types of investors, from my own perspective, I have put them into some classes. It is not an exhaustive or an elaborative list but at least, you get the idea of where I am driving at.

Class of Investors to the best of my understanding

New Investor
These are friends and family members who are willing to contribute a small quantity of money to your company.

The Ponzi scheme Investor
One who invests in ponzi scams continuously is this. This is the person who thinks about get-rich-quick schemes.

The researcher investor
The researcher investor wants to conduct thorough investigation before deciding whether to invest.They might even decide against investing altogether since, if you wait to make a decision until you know everything, you might never invest.

The Wealthy Trader
This one has had a number of profitable investments over the years. They are knowledgeable, experienced, show expertise.

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1. https://www.investsmall.co/the-different-types-of-investors-what-kind-are-you/amp/