The members of an LLC are generally listed in the Company\’s operating agreement, which is an internal company record that is not filed with any state agency.
In some states, the names of members are not required to be listed on the Articles of Organization that are filed with the state agency to form the LLC.
As such, in your particular state, the names of the members may not be required to be made public.
But not being ‘required’ to disclose the ownership information is different than ‘choosing not to’ disclose that information.