Essentially ALL unlisted penny stocks that have active online stock boards are scammy and should be avoided. I decided that 20 years ago and it's still true.
OTOH, there are 2,500 thoroughly vetted stocks on the NYSE. That's a big enough investing universe for anyone. The main NYSE board (not the NYSE-Market) has been a remarkably clean neighborhood in the post-Dot Com Bubble era.
I'd also shun the NASDAQ's lowest stock tier which is now called the NASDAQ-CM or the Capital Markets. Even nowadays, many of its listings are shady. There's another reason to avoid those stocks; they tend to perform terribly over the long run and in bear markets.
Why don't you take Warren Buffett's advice which is to go with a low cost S&P 500 index fund? That would have made you about 22% last year. The Dow 30 did even better. My guess is 98% of IHUB flippers would have done better in an index fund.
Understand that IHUB is mostly about gambling addiction and thrill seeking and not about making money.
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Because the Good Life is Just a Pump or Two Away