Seats: JL J, AA SD J, AA Z J..
But aside from seats, unless you are flying on an AA marketed ticket on JL, you should be aware of the earning structure for JL marketed flights if your ticket is booked as an "I" fare. They have an unusual "penalty" for those tickets, such as only earning 70% base miles, and only getting 14% EQD for miles flown..
https://www.aa.com/i18n/travel-info/...n-airlines.jsp