in my 8.0.1 , I created some new role :
DATA ADMIN - role type "Developer"
REPORT ANALYST - role type "Test"
SUPER ADMIN - role type "Admin"
SYSTEM ADMIN - role type "Model Admin"
USER - role type "User"
in my 7.4.10, it will return all system default role, as I won't create any my role at 7.4.10