Check out the main differences between an Owner and an Admin
By default, the account creator is an owner. This is the highest level of permissions. An owner can see all features and users, can access and control all the dashboard's capabilities and can decide that other admins will become owners.
Can an owner delete another owner or the account creator?
Yes, every owner has access to all users and content, and can delete other owners, admins and even the account creator
May be assigned to specific features, content and/or users. Additional managers' default permission is Admin.
Can admins remove other admins?
That's up to you :). You can decide it from your settings.