For sure, many site are integrating some updated details or data of the cryptocurrency. But the site that I most trust an can be rely on is the coinmarketcap. I have been using this site for quite a long time and I have no problems with it.
Yeah for sure everybody first can check if have an new coins is to visit the coin market cap website, coin market cap is a very realable source listing of new realized token or coins. And the we can check also to the exchanges if is the new coun legit listed in the exchange wallet where traded.