When creating new columns within Affinity, you will have the option of setting up a column as either a List-specific field or Global field. Global fields will exist amongst all the lists (of the same type), while list-specific fields will exist only on the list it was created on.
Note: Global fields can not be created/used on opportunity-type lists as opportunities can have multiple people and/or organizations associated with each opportunity.
When creating a column within a particular list (limited to Organization and People type), the option to set it as a Global Field will appear. They are indicated by the blue-colored text in the column title. Global columns are great because once created they may be leveraged on any similarly typed list you create.
Below is an example of a Global Field column created within an organization list:
If you view any organization's profile page, the field will appear:
A List-specific Field will only appear on the list in which it is created, indicated by black-colored text. This is used so that data from one list does not affect other lists
Note: All columns created within Opportunity lists will be a List Field.
Below is an example of a List Field column created from within an organization list:
If you view any organization's profile, you will not see this field appear:
This view will change when you click on the appropriate list on the left-hand side. List specific fields will only appear when viewing the list that it was created on.