These are some free listing exchanges

1. IDEX: https://docs.google.com/forms/d/e/1FAIpQLSfzF_NTscqqK4TPuJQixe4tZCEJHDVJdTLvNelb_V2D582RVg/viewform
2. Radar Relay: https://medium.com/radarrelay/radar-relay-regulatory-strategy-9da29a9e59cb (read the end) You'll have to contact them.
3. BarterDex: https://komodoplatform.atlassian.net/wiki/spaces/KPSD/pages/225738753/How+to+submit+new+ERC20+Tokens+in+BarterDEX