The coins listed are all quality and all worth to hold long term.
A listing on one or several US exchanges would probably bump the price temporarily but the big gains will come from when they start to deliver on their roadmaps. This will start happening early next year for most of them.
Also, I would disagree on that Binance is not a big exchange, which btw is used by a lot US people since it doesn't require identification. Furthermore, Wallton is already listed in Korea.
RE: Crypto not yet listed on big exchanges. Right Time to Buy..!!!