Arista ran other series concurrently with the main series for a few years.

9000 series

This was a set of double-LP discs issued by Arista. The series apparently didn't last long; only three cast albums and a Tony Orlando & Dawn compilation were issued in this series. AL-9001-9002 were apparently not issued as of this writing.

AL-9003 The Magic Show/Original Broadway Cast Recording
AL-9004 Funny Lady/Original Soundtrack Album
AL-9005 Chicago/Original Broadway Cast Recording
AL-9006 The World of Tony Orlando & Dawn

7000 series

Another short-lived double-LP set vehicle for Arista.

AL-7000 The Greatest/Original Soundtrack Album - Contains the original version of "The Greatest Love of All", a big hit for Arista artist Whitney Houston.
AL-7001 The Grateful Dead/Terrapin Station
AL-7002 The Alan Parsons Project/I Robot
AL-7003
AL-7004 Bay City Rollers/It's A Game

A2L 8600 series

Though it lasted longer than the other double-LP series, it was short-lived.

A2L 8601 Barry Manilow/Greatest Hits
A2L 8602 Amthony Braxton/Alto Saxophone Improvisations
A2L 8603 Lou Reed/Rock And Roll Diary 1967-1980
A2L 8604 The Grateful Dead/Reckoning
A2L 8605 Dionne Warwick/Hot! Live And Otherwise
A2L 8606 The Grateful Dead/Dead Set
A2L 8607 Al Stewart/Live Indian Summer
A2L 8608 The Outlaws/Bring It Back Alive
A2L 8609 The Kinks/One For The Road

A2L-8400 series

This was the shortest-lived of all the double-LP series issued by Arista. The two albums it issued had numbers which only applied to certain copies.

A2L 8401 The Kinks/One For The Road
A2L 8402 Lou Reed/Rock And Roll Diary 1967-1980

AL-8300 series

Perhaps better known for getting albums in Arista's 8000 series than anything else, this in fact was a separate series from 1981-82.

A2L-8300 The Outlaws/Bring It Back Alive - Also issued as A2L-8608.
AL-8301 The Mind Of Gil Scott-Heron
A2L-8302 Sky/Sky 2
AL-8303 Woman Of The Year/Original Broadway Cast Album
AL-8304 Marco Polo/Original Soundtrack Recording
AL-8305 Dixie Dregs/Dregs Of The Earth
AL-8306 The Best Of Gil Scott-Heron