Hi al!
First of all thank you to everyone who's shared code, designs, videos, tips and experiences in this thread!
I'm thinking about reproducing Sky's latest UFC design but with fewer Arduinos, by controlling all OLEDs via one SPI or i²c bus as shown here:
Multiple i²c devices on one Arduino (video tutorial) or this
Multiple SPI devices on one Arduino (video tutorial)
The first step for me was to reproduce running an i²c 128x32 OLED (the only one I currently have) with the custom UFC fonts that were shared earlier in this thread.
Since no previous comment included all necessary steps (and because it took me a few hours) I summarized it in this example project printing the custom Hornet UFC fonts using u8g2 on an i²c 128x32 OLED connected to an Arduino Uno:
https://github.com/michaelosthege/display-i2c-example
I hope this is useful for the next person on this endeavor