I found this quite challenging.
Firstly I've named a number of artists that I have big gaps in my familiarity with their entire album catalog.
Secondly, I no longer listen to albums, so I found it difficult to bundle tracks into album groups, unless it was something, like the latest Henley or Elbow album, that I listened to incessantly for a couple of weeks. Then there are many groups, such as Crowded House, that I've discovered through Greatest Hits Albums.

Lastly, these are my favorite artists because I like the vast majority of their music. It's tough to call absolute favourites and even the albums I'm not so keen on will have a redeeming feature or two that I enjoy.

Anyway, here's my shot. Sorry for the alternate format and lack of comment:

Artist
Fav
Least Fav
Joe Walsh
Barnstorm
The Confessor

Eagles
Hotel California
Eagles

The James Gang (with Joe Walsh)
Rides Again
Thirds (I don't know the post Walsh albums)

Abba
Super Trouper
The Visitors

ACDC
They all sound the same don't they

Andrew Gold
All This And Heaven Too! (Halloween Howls is fun)
Whirlwind (I'm not well up with his flood of later albums)

CSN
Daylight Again
4 Way Street (I took it back to the shop!)

Dan Fogelberg
Netherlands
Exiles

David Lindley (Early)
El-Rayo X
Mr. Dave

David Lindley (Late)
Twango Bango II
Live In Europe!

Dire Straits
Brothers In Arms
On Every Street

Timothy B Schmit
Playin' It Cool
Tell Me The Truth

Randy Meisner
One More Song
Randy Meisner I

Glenn Frey
Strange Weather
Solo Collection (the new songs were a real let down)

Don Henley
Cass County
Inside Job

Elbow
Seldom Seen Kid
The Take Off And Landing Of Everything

ELO
Out Of The Blue
The further back you go the weaker they are

Fleetwood Mac
I like the hits and You And I Pt II
I'm really only familiar with the Buckingham Nicks era

First Aid Kit
Stay Gold
The Lion's Roar

Genesis (Gabriel)
The Lamb Lies Down On Broadway
Tresspass

Genesis (Collins)
Invisible touch
And Then There Were Three

Jackson Browne
Late For The Sky
Lawyers In Love
I haven't heard his later stuff
but Standing In The breach is pretty good.

Jay Ferguson
All Alone in the end Zone
Real Life Aint That Way

Phil Collins
Face value
Testify

Peter Gabriel
So
Peter Gabriel II

Queen
The Works
Hot Space

Richard Marx
My Own best Enemy
Rush Street

Rod Stewart
Every Picture Tells A Story
Body Wishes (Ignoring the American Songbook stuff)

REM
Automatic for The People
Reveal

Spirit
Spirit
The 70s albums

Stevie Nicks
The Wild Heart
Street Angel

Status Quo
Heavy Traffic
The entire eighties

Tom Kimmel
Short Stories
Shallow Water (it's got god songs on it)

Tom Waits (Early)
Small Change
Nighthawks At A Diner

Tom Waits (Later)
Rain Dogs
Frank's Wild Years

Van Morrison (Early)
Moondance
Period Of Transition

Van Morrison (Later)
Enlightenment
Pay The Devil

Warren Zevon (Early)
Warren Zevon
The Envoy

Warren Zevon (Later)
Mr Bad Example
Life Will Kill Ya

I'm gonna work on a top three tracks for all my favourite artists. I hope it'll be easier... and I may be able to include a slightly wider range of artists, including some black guys and gals