I found an addon called DataView that does exactly what I need it to do - accept a spreadsheet and then allow searching on it.
https://marketplace.atlassian.com/apps/1218989/dataview-for-confluence?hosting=server&tab=overview
Problem: It doesn't work on the Cloud instance.
I'm either looking for a way around that or looking for a product that does the same thing and works with the cloud instance.
Thanks.