Coin Images needed for educational game

I am an educational game developer and need 16 400 x 400 circular "coins" designed. These should include source files and coin images in .jpg formats. The coins are rewards for progress on the game. Each coin will have the face of a famous mathematician in the center, with the name of the mathematician arched around the image. The background colors for the outer portion of the coins should all be different and kid-friendly and can be chosen by designer. Reds, blues, greens, golds, and all other colors. Images of the mathematicians can be gathered online by the designer and should be public domain images.

Here are the mathematicians needed:
Euclid
Elon Musk
Ava Lovelace
Charles Babbage
Pythagoras
Eratosthenes
Galileo
Johannes Kepler
Benjamin Banneker
John Nash
Catherine Johnson
Fibonacci
Ptolemy
Leonardo da Vinci
Albert Einstein
Isaac Newton

Fast turn around needed. It would also be helpful if would-be designer provide an example of one of these.