Co-authors/PIs in a grant are misrepresenting their CVs. Any suggested actions?
I think you should bring this up. The motivation to bring this up is, that a tampered CV will most likely be detected by the referees or the agency and if so, this may most likely affect the chances for getting the grant negatively. Since the overall goal is to get the grant, you should bring this up.

So, you could approach your supervisor and note that you are not sure if the CVs are clear enough about these grants and that it currently looks a though these CIs won these grants personally which seems implausible to you. If your supervisor agrees, you (or they) can simple ask the respective CIs to clarify if these grant were actually awarded to them or their institution and, if applicable, be more clear in their CVs.

Including grants where you have been only one CI of many and that have been awarded to an institution in CVs is common, but I advise to be precise  here. Something like


  Grant XYZ from agency B, 1.000.000$ (contribution of Prof A: subproject 300.000$ and design of general strategy)


could be appropriate.