@RoundAdmin - sorry I am not knowledgeable of migrating Microsoft List to SharePoint.
Only thing I would advise is that if you export your Microsoft List into Excel, do not create the SharePoint List using the Excel file option on SharePoint. Doing this will create the correct column header display names from the Excel file, but it will create different Logical names for each column. For example you could have a column display names in SharePoint called "Name", "Description" and "Status", but SharePoint will record the Logical names as ("field1", "field2", "field3" etc)

Display names & Logical names: https://learn.microsoft.com/en-us/power-platform/power-fx/reference/operators
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