Hi Leon,
We can import the Excel spreadsheet to SharePoint as a list and then create a lookup column which get data from that list. Below are the detailed steps:
- In IE, go to your site > Settings icon > Add an app > in the second page, click Import Spreadsheet.
- Give a name to the list, click the Browse button > select the Excel file which contains the name column > click Import.
- In the pop-up page, select Range of cells in Range Type drop down list, click the - button under Select Range, select the cells contain names and click the following button then click Import.
- Go to Site settings > Site columns > Create > type a column name > select Lookup (information already on this site).
- Scroll down to Get information from, select the list we just created using Import Spreadsheet > OK.
- Go to the list where you want to add this column, click LIST > List Settings > Add from existing site columns > select Custom Columns in Select site columns from:, select the column we created in step 4 > OK.
- Now when we create an item in this list, we can select the names from the column we added.
Regards,
James