When Satoshi Nakomoto first created bitcoin, only a handful of people knew about it, with time it got wider audience and even started to worth some money and one day it went to 3 dollars per bitcoin, people were really shocked but wanted a taste of it, nowadays that bitcoin worths close to 9 thousand and was once 20 thousand dollars each. Top 20 is not the bad horrible coins, sure there are some like bch and bsv or even xrp if you ask me that are scammy and shady but the legit ones are actually trustworthy coins that worths the risks.
Any cryptocurrency is a "risk", BTC included. I believe use case, and tech is the most important thing to look after when deciding which project you want to throw your money at.
There are so many useless, vaporware projects out there that shouldn't have any value, yet does.
Been eyeing Blocknet for a while, and believe it's one of the hidden gems out there, due to their DEX platform. As a node owner (Requiring 5000 BLOCK), you'll be able to profit from DEX trading fees through your node. Once DEX's becomes the industry standard, you'll be able to make a boatload of money off fees, including their decentralized oracle network (Read up on the XRouter, and XBridge tech for more info on that).
All this combined provides 3 income streams as a node owner:
Block Rewards
DEX Fees
Oracle Fees