I also want to mention Spectrecoin (XSPEC) again. Even though it's a project that's almost 3 years old, it's practically a whole new coin since the new and unique Proof-of-Anonymous-Stake algorithm was developed and launched in May 2019.

Solid staking coin with multiple privacy features (including ring sigs, stealth addresses, integrated Tor+obfs4), declining inflation, decent exchange options, and smart developers working on more wallet options and privacy improvements for the roadmap. Also easy to setup and keep updated for staking on a raspberry pi.