Verge went from a 500,000 to a near 700 million market cap last year, because people wanted in on a cheap solid privacy coin, and this year privacy coins will still see a rise once we hit a good bull run. Although the crypto world is unpredictable, it's likely we won't even see a quarter of the gains this year since I doubt the total crypto market cap will go 30x this year like last year, most people predict 1-2 trillion so we may have 4x gains. Anyway, while it's harder than ever now to find solid privacy coins with an extremely low market cap, like lower than zoin at 20m, I'm sure there will be some hidden gems.
Some I've found so far are hexx (3m) and aerium (700k). Also another coin that I wasn't going to share because I'm sure it's a scam like xspec is speedcash that has a 200k mc.
If you hold, found, know, or believe in any low mc privacy coins please share!
I would rather invest in good projects than just assume a coin will go up because it's of a given type, so many coins went up last year, even Dentacoin hit 2 billion in market cap, the market we're in now is the type where only the strong will survive.
With something as important as privacy, people will use the most proven one being Monero.
I don't see any privacy coin out there which can come close to matching Monero, so see no need for people to use anything else when it comes to privacy.
Sorry I couldn't recommend you one!