Louisiana Revised Statutes Tit. 9, § 4888. Ranking of privileges

(1) Privileges for ad valorem taxes against the property subject to the privilege and the privileges provided in R.S. 30:32, 74(A)(3), and 91(B)(2).

(2) Privileges given by Subpart A  1 of this Part.

(3) Mortgages and vendor's privileges on the operating interest and other property affected by such mortgages or privileges that are effective as to a third person before the privilege is established.

(4) Security interests in collateral subject to the privilege that are perfected before the privilege is established or that are perfected by a financing statement covering the collateral filed before the privilege is established if there is no period thereafter when there is neither filing nor perfection.