I agree that coins with Coins with token burning feature and auto-deflationary coins are very popular, because now the inflation in many contries are big and they allow to safe money and even earn money for the growth of the price. Come the apps of such coins you can download from the google apps such as
https://play.google.com/store/apps/details?id=com.xaltbase.appIt makes auto-deflationary very popular.
Liquidity depends how useful is the coin and how many people use it. The more people use the coin the high liquidity it has. Also liquidity depends how profitable is the coin. High profit attracts a lot of users.
But is auto-deflationary coin has a big community and good liquidity its price will raise more active. Also it is important to check the social links of the coin to understand how active is its development and how many active users of the ecosystem it has.