One that comes to my mind is Deep Onion. It is a TOR-based anonymous coin, which first came online in 2017. Currently, it is down 99% from the ATH, but the community is still very active and the promoters are working really hard to remove bugs and other software issues. But for some unknown reason, the exchange rates have remained at very low levels, even during the current rally.
Yeah, DeepOnion really is a phenomenon. They have a huge community for their relatively low marketcap. I remember how there was a lot of hype around the coin in the 2017 bullrun. Wouldn't surprise me if this coin got pumped at some point, that is if we are going to see a altseason again.