I think the best tools to check all masternodecoins and compare them in one place are:

https://masternodes.pro/
https://masternodes.online/

Two very good services which provide all the info you asked for.

This is a great question because this is the main problem with masternodecoins, after the period of profitability which is from 1 to 5 years, but mainly not more as 3, they just going to be inflated and finally the price is going down. If there is no additional value in the project like anonymous transfers or features inside the wallet like chat or something then with no use is no value and after high POS profitability period, all these projects just become death zones.