Can we upload a widget that is not included in the options?

We want to use this widget in combination of creating the form via your program 

https://www.cdc.gov/widgets/Prediabetes/html5/iframe.html

You can embed that in your form using iFrame embed widget, see my demo form below.

Demo form: https://form.jotform.com/91018095125957

Guide: How-to-Add-a-Widget-to-Your-Form

However, please note that the results on your widget can't be saved because you are merely showing it in your form.