Thanks for doing your part to address Tech Debt, @mogoodrich!
I believe that we have decided to use the airbnb js style guide, and I thought that it was already incorporated into the Order Entry OWA per this thread.
That style guide says the first letter of JSX files should be capitalized: https://github.com/airbnb/javascript/tree/master/react#naming
Their JS naming is trickier (filename should match default export; camelCase for functions, PascalCase for classes): https://github.com/airbnb/javascript#naming-conventions
(Other references to the airbnb style guide from Pascal, and from Jedidiah about the Cohort Builder OWA.)