Articles of Incorporation for an LLC only requires one member information (who is also the agent for service of process).
E.g. in CA, you need to file the AoI (in there, you will indicate if the LLC is managed by all members, managed by some members, or managed by manger member), then a Statement of Information which requires all the member's information.
If there are more than one member, it is best to have an operating agreement in writing and signed by all members. The attached exhibit should include the percentage of ownership of all members. Your specific operating agreement will also take into account of what type of membership and management and control the members will have.
Disclaimer: The information that I post in this forum is NOT legal advice and should not be relied as such. It is intended to provide general information in summary form on legal topics. Formal legal advice should be sought in particular matters.