Let me explain this better.
Types does not create any Templates, Archives, or other sort of Lists.
Types does empower you to create the Content Types.
Then, it also provides a limiited set of ShortCodes to display this Content, in your Post Body.
Or, with the Types API, you can create own PHP Templates and insert (call) the Types Contents in there with our API.
So yes, that Template (the list of your Bios) is a thing that is not done with Types.
The content in there, yes, that is Types stuff, but how it's displayed, since this is a list, is not made with Types.
This is etiher provided by your theme, a Plugin or full Custom Code in a Template in your Theme's Folder (FTP).
Usually, those things are coded in a way to create a Loop, that will pull any new data automatically, so if you add more Bios, those would appear automatically to the List.
It seems to me that is a hardcoded list, limited to 6 (or any) output only.
I can not help to fix this, as I did neither create it nor am I familiar with how it's setup.
But I can show you how you can do a new such list with Views Plugin.
Please aknowledge that I do not just want to sell you another Plugin.
Views is THE plugin to display contents - not only created by Types, but mainly.
You will create Loops, lists, grids, and much more all from the WP Admin.
On top of that you can add Custom Searches and even query users or taxonomies.
You can have a look at it here:
https://toolset.com/home/toolset-components/
This is a snadbox to play with it:
http://discover-wp.com/
It's free.
Please let me know if you need help with that.