When creating new columns within Affinity, you will have the option of setting up the column with either a List field or Global field. This setting determines whether the column will exist amongst all the lists or just a specific list.
Note: Once a field is defined as list specific or global it can not be changed. Global fields can not be created for an Opportunity list.
A Global Field column will appear as an option within all Organization or People lists (depending on which list they are created on). They are indicated by 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's list:
If you view any organization's profile page, the field will appear:
A List Field column 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's list:
If you view any Organization's profile, you will not see this field appear: