IOHK SUMMIT 2019 coins design

I just recently realized that the IOHK summit coins have different designs on them that seem to resemble people. Are there images of other designs in the internet? Also need help knowing who the first two are. The third one looks like Goguen to me. it’s really hard to tell the other two but my best guess is left being Cardano and center being Shelley.
coin

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Here are additional pictures of these beautiful coins:
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