Hi @Hayden_Lang ,
Thanks for your post. I am sorry the UI/UX for the picker is not as expected in your project.
Can you share some additional information on what you are trying to do?
If you are trying to add a custom baselayer to the picker, this thread provides some guidance and might be helpful Customize Viewer's default baselayerpicker
Please let me know if that does not help and I would be happy t try and assist further.
Thanks,
Luke