If the project is a scam, it would be really silly of its team to show their true identities. In most cases, they just find some pics online and use them as the images of their Chief Financial Officers or advisors, as was seen in Empire Card who used a picture of French actress Sabine de Poncins, little known outside of France, as the portrait of their proud imaginary CEO Patricia Harrison. There have even been reports of Ryan Gosling working for a project as a designer under a completely different name.
Some scammers are, however, way more intricate. They know its quite easy to reveal a fake pic so they just hire people to pose as their CEOs, CFOs, and so forth. Rumor has it that certain scammers even pay homeless people to pretend theyre leading a disruptive startup to a bright and radiant future. This fraud is much harder to call out, but at least those guys help homeless people in some way, so heres your silver lining.
One of the easiest way I can think of is holding a q and a or webinar where people can ask questions and details about their platform, so we'll know if these people are real experts and they really know what they are talking and they have the capability to launch their project and sustain it in a long term.
But these is not a guaranty that they are not going to scam people, they can get their project in the exchange but they can delay their roadmap with their weak alibi of market is not good.