You look at Ripple XRP, IOTA MIOTA and, at a lesser extend, at Stellar Lumens. All these coins have at one time been in 10 cents- 20 cents range. Their supply range from 38 billion to 2 billion. What makes them very interesting is how fast it wen from pennies to dollars, except for Lumens. What I like to focus on, is what may be the right amount of supplies to the amount price per coin.
The third element is, I think is the exponential factor. That is how fast it can explode via momentum. You see these coin does have it by the inexpensive price per coin. The more coins you have, the higher the total value be when per coin price rise.
For the average investor, they don't have millions of dollars to invest in Bitcoins to gain large profits. But they they do have thousands of dollars to buy affordable under dollar coins. That's what makes coins under 50 cents, under 10 cents or even under a penny such a powerful economic force.
Here's an example. To not show further partiality, I just use an made up example coins. Take CoinA, say it is .008 cents, it is not even a penny. You can buy 1 million at .8 btc, at current prices. When bitcoin rises say 15k, that doubles your holding. You can expect higher than that because it is likely CoinA would rise in btc value. Most altcoins when converted to fiat currency, is first converted to btc. So if your coins btc value goes up so will the fiat.
I think the right coins for below 30 billion supply and under 20 cents range, may need the following. There should be a following, some promotions and special functions this coins has. There are a few of them on the charts, you should have to look for them.
Finally note, these coins do not need to be in the top 100 or even top 500. When Bitcoin hits 50k or even 30k, the top 200 - 300 may have market value of 500 million to a billion.
** Disclaimer This blog is based on my opinions. I am not giving professional advice. Anything written here should be taken as an opinion and is the responsibility of the reader to take due diligence as such. Basically saying I may be wrong, right or neither, just saying its my opinions and my voice.