The Created by data type is for displaying a non-editable user value showing who created the row. Created by cells generally default to the creator of the worksheet in a format similar to the User data type. However, if a different user adds a new row, Created by will reflect who added the row. The Created by data type is a System data type that restricts data in a column and automatically adds the corresponding data.
The Created by data type has few settings, as the data in cells cannot be changed. However, like other text data types, you can adjust the formatting of cells in a Created by column using the formatting toolbar.
Created by is one of Spreadsheet.com's automatic column-level data types. Make sure to check out the Created at data type, as well as the Updated by and Updated at data types. All of our column-level data types are listed in our introduction to data types article.