Try adding the below filter to your items property of dropdown:
Filter(AddColumns(UsersList,"hideDropDownValue",Active),hideDropDownValue).Title
The above filter will show all users who are active in the list. Active = Yes
If you want to show non-active one's try the below filter:
Filter(AddColumns(UsersList,"hideDropDownValue",Active),!hideDropDownValue).Title
See the attachments for results.
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