UPDATE: Did a test with I2 Localization which worked pretty well. Able to create the Google Sheet from inside the Unity Editor following their excellent instructions. Then used Playmaker to create a random key for the test data I had in the spreadsheet and was able to assign it to the text mesh pro text object. Did a quick test of a WebGL build and it worked. Now going to try it inside the actual game to make sure it not only works, but that it doesn't weigh it down.
Still, if anyone has a lighter, more elegant way of doing this do please add to the thread.