Hi,
try to see our docs at https://www.easy-profile.com/docs/69-sql-custom-where-list-and-module.html

In the user list menu item and in user module there are a parameter called "SQL Custom Where"

Because not try this:

group_id NOT IN (id_of_admin_group)

replace id_of_admin_group with id of Admins groups.

example (see screenshot from Administration->Users->Groups) for me are 7 and 8, so

group_id NOT IN (7,8)

That worked. Thank you. So does, the same concept with user id's. I was including your entire example including the less than and greater than ie <150,156>.

user_id NOT IN (150,156) works however.