American Express Membership Rewards - AmEx Plat- Additional card benefits?

Thinking of applying for the AmEx plat + may want to get additional cards & trying to see if I'm reading the benefits correctly. Does any one know/know of a site (or thread here) that tells what benefits are available to all cards vs. just the main cardholder? ie, I'm reading that the $200 airline fee credit only works on the original card, but the lounge access may be available for each cardholder?

Thoughts, advice, links appreciated. Thanks in advance!

Don't have a link, bit you got it right, the only benefit additional cardholders get is lounge access and priority pass

the big three: PP select; AA, DL, US lounge; & Global entry

The AC's get all the benefits except the $200 airline credit, as that is per 1 account regardless of the number of AC's. You can always tweet @askamex for official info regarding that question.

The AC's get all the benefits except the $200 airline credit, as that is per 1 account regardless of the number of AC's.

This. In addition to the benefits already mentioned, they get access to PTS/FHR, whatever insurance benefits the card offers, etc, etc. They should also get SPG Gold and National Exec status, but YMMV.

I can confirm National Exec (which you can use to Status Match to Hertz Five Star)
Also, Global Entry refund on each card.
Lounge Access.
Priority Pass Card for each (you have to call, can't sign up online for addl cards)