Civicrm and wordpress user registration after admin approval
It looks like you would need to create a custom plugin which would play role to interconnect the two features, ultimate member plugin account verification method and automatic wordpress user creation through profile.

In that custom plugin, you would need to use 'hook_civicrm_post' hook which will get called every time a DB write is done, make sure to put an if condition right after the hook function definition to make plugin run only when account gets created and in that if condition make call to the function that performs account verification process in 'Ultimate Member' plugins, more detail on how to call a function of wordpress plugin from another wordpress plugin can be found here.

Hope this solution will help you.