I don't think there is any role that would grant permissions in this manner.
But here's something to at least help you identify where items need to be updated manually. This query identifies any users or groups that have "Process Admin" permissions on published processes. You could set-up a workflow that runs this each day and emails you if any results are found or something similar.
This was tested on Forms 11 Update 2.
SELECT
bp.[name] AS [process_name],
u.[username] AS [username],
u.[displayname],
CASE
WHEN uir.[role_id] = 1 THEN 'Process Admin'
WHEN uir.[role_id] = 3 THEN 'Submitter'
WHEN uir.[role_id] = 7 THEN 'Business Manager'
ELSE CAST(uir.[role_id] AS VARCHAR(20))
END AS [role]
FROM [LFForms].[dbo].[cf_business_processes] AS bp
LEFT JOIN [LFForms].[dbo].[cf_users_in_role] AS uir ON uir.[bizprocess_applied] = bp.[bp_id]
LEFT JOIN [LFForms].[dbo].[cf_users] AS u ON u.[user_id] = uir.[user_id]
WHERE bp.[is_deleted] = 0 --Exclude deleted processes
AND bp.[is_activated] = 1 --Only review published processes
AND uir.[role_id] IS NOT NULL --Exclude processes with no user assignments
AND uir.[role_id] <> 0 --Exclude deleted assignments
AND uir.[role_id] <> 3 --Exclude submitters
AND uir.[role_id] <> 7 --Exclude business managers
AND u.[username] <> 'matthew' --Exclude username of employee who is allowed to be Process Admin
UNION
SELECT
bp.[name] AS [process_name],
'GROUP' AS [username],
g.[full_group_name] AS [displayname],
CASE
WHEN gir.[role_id] = 1 THEN 'Process Admin'
WHEN gir.[role_id] = 3 THEN 'Submitter'
WHEN gir.[role_id] = 7 THEN 'Business Manager'
ELSE CAST(gir.[role_id] AS VARCHAR(20))
END AS [role]
FROM [LFForms].[dbo].[cf_business_processes] AS bp
LEFT JOIN [LFForms].[dbo].[cf_usergroups_in_role] AS gir ON gir.[bizprocess_applied] = bp.[bp_id]
LEFT JOIN [LFForms].[dbo].[cf_usergroups] AS g ON g.[group_id] = gir.[group_id]
WHERE bp.[is_deleted] = 0 --Exclude deleted processes
AND bp.[is_activated] = 1 --Only review published processes
AND gir.[role_id] IS NOT NULL --Exclude processes with no group assignments
AND gir.[role_id] <> 0 --Exclude deleted assignments
AND gir.[role_id] <> 3 --Exclude submitters
AND gir.[role_id] <> 7 --Exclude business managers
AND g.[full_group_name] <> 'Forms Administrator' --Exclude name of group who is allowed to be Process Admin
Update lines 20 and 43 (and/or duplicate the lines if necessary) with the names of any users/groups that are allowed to be process admins on published processes. Remove (or comment out) lines 19 and 42 if you want to include Business Managers instead of just Process Admins.