How to create multiple line graphs that has a shared X axis ?

Hi Hanson97 

Try custom visuals, maybe you can find what you need.

https://appsource.microsoft.com/en-us/marketplace/apps?product=power-bi-visuals

The below custom visual will allow splitting to multiple line charts ( not exactly what you need but have a look )

https://appsource.microsoft.com/en-us/product/power-bi-visuals/WA104381939

You can always learn how to develop your own Visuals 

https://www.youtube.com/watch?v=HRMLdaB3ogs

Hello Hanson97 ,

If you add the category on the "Legend" pane of the Line axis you should get this result.

If you liked my solution please give it a thumbs up 👍. 

If I did answer your question please mark my post as a solution ✅.

Thank you !

Cristian