Create a data type (Power Query) – Microsoft Support

Excel has a number of linked data types that you can use right away. But, you can also create your own data type from any supported data source by using Power Query. First you import your data with Power Query, then you shape the data the way you want, and finally you load the data type into a worksheet so you can work with the data.

https://support.microsoft.com/en-us/office/create-a-data-type-power-query-a465a3b7-3d37-4eb1-a59c-bd3163315308