The lack of exchanges is a big problem... also the CME blocking.
It was not possible to list Bitcore there. Binance / Bittrex / Bitfinix has a own police for any listing. They can also easy create own projects for own exchanges.
If Binance, Bittrex, Bitfinex are strict with their listing verification and approval, you can filter other exchanges.
I nominate the old exchange, TradeOgre. I know it is not a big exchange but it has run many years and I guess they have not strict listing rules.
Website:
https://tradeogre.com/marketsCoin Listing application form:
https://docs.google.com/forms/d/e/1FAIpQLScolXS8WMCDG7j8dIAbmutrQR6BWD5BrOCcRKJLCFfgPTBwoQ/viewform