Do I give a grand total of contract labor expenses or do I separate them from each contractor?

Enter the total amount paid for the year in the Contract Labor section for expense from self-employment.

You can enter each name and amount or just the total.  Only the total goes to Schedule C line 11.  But if you transfer into 2022 next year the names might come over so you won't forget one.  It might be helpful to have it listed out for your records.  

Making individual entries (in any income/expense category)   is for your use only since the IRS only gets the total on the Sch C.   Remember that TT is an income tax filing program and not a bookeeping/accounting program  so it is up to you how much effort/time you want to put into breakdown lists that the IRS will not see.