There is a risk of lookup data skew when loading data into Salesforce in the order of Team, Course, Course Offering, and Account, because the Team object has a lookup relationship to the Account object, and many Team records may reference the same Account record. This can cause performance issues when querying or updating the data. Account is not a required field for Team, and there is no risk of account data skew, which occurs when a single user owns a large number of Account records. Reference:
https://help.salesforce.com/s/articleView?id=sf.data_loader_lookup_skew.htm&type=5
https://help.salesforce.com/s/articleView?id=sf.data_loader_account_skew.htm&type=5
https://powerofus.force.com/s/article/EDA-Team