Determine whether to create a field or add

I'm looking to copy one site to another site, and part of this is I'm looking to create/add fields to the destination site.

Is there a clear way to determine whether I need to create a field or add a managed field.

The reason I ask is when I just create a manged field it causes a conflict. I've tried readonly, but some fields like Taxonomy create hidden fields in the background. Below is a screen shot of the columns that I could possibly need to add