For something small and not very well  known I would definitely recommend SpectreCoin(XSPEC). They have an interesting product and a renewed team (since around 6 months) that  works hard an provide a good level of transparency.

Another recommendation is Particl. Old, estabilished project, that had a huge price drop recently (which means-finally an amazing opportunity to buy ).

Particl is the rebranding of SDC(Shadow Cash) and XSPECis its fork, so they have something in common:)