XSPEC meets your criteria. At time of writing its market cap is $41,756,556 USD according to coinmarketcap. It's a good privacy coin that's currently very undervalued even at its current price of about $2, which is very close to its ATH (its ATH was closer to $2.25). If you're interested, you can check the CoinWiki (URL in my signature), or you can visit the project's Slack channel. The developers do a good job of getting on the Slack channel nearly every day and have personally answered numerous questions (and there's a lot of motivated people on the Slack channel who would be more than happy to help you, too).