I believe DeepOnion is a great coin to check out, and very undervalued right now! It's a great privacy coin with a great team and community! They have a working product and continue to release more! I also believe that Nano is another good coin to look into as well, It brings awesome technology using the block lattice! The transactions have been instantaneous for me! They've had some bumps along the way but i believe it's a great coin for the HODLfolio!