Notes
Apex:
List<Account> acList = new List<Account>();
Account ac1 = new Account();
Account ac2 = new Account();
Account ac3 = new Account();
ac1.Name = 'Account 01'
ac2.Name = 'Account 02'
ac3.Name = 'Account 03'
acList.add(ac1);
acList.add(ac2);
acList.add(ac3);
insert acList;
Flow Builder:
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