I noticed coinmarketcap already has a triangles page (on app at least) I like to look at from time to time. coin circ is 130k though. I remember seeing coinmarket policy of $10k daily volume minimum. I think DecentralCore's plan is arbitrage and the BTC buys are already stacking.
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I think you automatically get listed once you show up on one of the ~400 odd exchanges they aggregate date from.
https://coinmarketcap.com/rankings/exchanges/

One that seemed promising (and ranked nicely for volume) was gate.io.