Hi @Sean_Middlehurst - No problem, can you please provide the exact command you are trying to execute, when the number of entries greater than 100, you can use next token approach to get the next 100 records. The same discussion happened in the blog - How to to get all UserNames from aws quicksight list-users cli - #5 by igiraldo.
Please have a look, hope this will help you.
Regards - Sanjeeb