For anyone curious, I got the names from here:

https://jigjids.files.wordpress.com/...ggis_khan1.pdf

It's a long and heavy read, but it has a lot of pre Mongolian Empire names. I kinda misspoke, the text is more about the founding of the empire in the beginning, and then around the middle it gets more into the earlier days. My goal was to slog through all the pages to get the names so everyone wouldn't have to themselves if they were interested.