Listing fee is one of the lifeblood of any centralized exchange and some "DEX". There is no way they are going to list new projects for free unless they are also a new exchange. They can offer free listing (without voting) within a few months after launching but once they gained their footing, they will also be charging some listing fees. Some may also offer no listing fees for a longer time but they'll be killing the traders with high transaction fees later.

I went over the exchanges board and found one with no listing fees according to their post.

I remember this unnamed exchange not charging listing fees before but requires new tokens/coins to do airdrops/rains in the exchange's chatbox. I'm not sure if that is still the case.