I found a list on a thread in a forum called Progressive Ears that has a go at all PG-era credits, but I can't speak for its accuracy and I haven't looked through all the comments to see what else has been suggested:
Quote
TRESPASS
Looking For Someone (Banks-Gabriel-Phillips-Rutherford)
White Mountain (Phillips-Rutherford)
Visions of Angels (Phillips)
Stagnation (Phillips-Banks-Rutherford-Gabriel)
Dusk (Phillips-Rutherford)
The Knife (Gabriel-Banks-Rutherford-Phillips)
NURSERY CRYME
The Musical Box (Phillips-Rutherford-Banks-Gabriel)
For Absent Friends (Hackett-Collins)
The Return of the Giant Hogweed (Banks-Gabriel-Rutherford-Hackett-Collins)
Seven Stones (Banks) or (Banks-Hackett)
Harold the Barrel (Gabriel)
Harlequin (Rutherford-Banks)
The Fountain of Salmacis (Banks-Collins-Gabriel-Rutherford-Hackett)
FOXTROT
Watcher of the Skies (Banks-Rutherford)
Time Table (Banks)
Get 'Em Out by Friday (Banks-Gabriel-Rutherford-Collins-Hackett)
Can Utility and the Coastliners (Hackett-Banks)
Horizons (Hackett)
Suppers Ready
a. Lovers Leap (Banks-Gabriel)
b. The Guaranteed Eternal Sanctuary Man (Banks-Gabriel)
c. Ikhnaton and Itsacon and Their Band of Merry Men (Rutherford-Banks-Hackett-Gabriel)
d. How Dare I Be So Beautiful? (Gabriel-Banks)
e. Willow Farm (Gabriel)
f. Apocalypse in 9/8 (Banks-Collins-Gabriel-Hackett-Rutherford)
g. As Sure as Eggs is Eggs (Banks-Gabriel)
SELLING ENGLAND BY THE POUND
Dancing With The Moonlit Knight (Gabriel-Banks-Hackett-Rutherford-Collins)
I Know What I Like (Hackett-Banks-Gabriel)
Firth of Fifth (Banks)
More Fool Me (Rutherford-Collins)
The Battle of Epping Forest (Banks-Gabriel-Rutherford-Collins-Hackett)
After The Ordeal (Hackett-Rutherford)
Cinema Show (Banks-Rutherford-Collins)
Aisle of Plenty (Gabriel-Hackett)
THE LAMB LIES DOWN ON BROADWAY
The Lamb Lies Down on Broadway (Banks-Gabriel)
Fly on a Windshield (Banks-Rutherford-Hackett-Collins-Gabriel)
Broadway Melody of 1974 (Banks-Rutherford-Gabriel)
Cuckoo Cocoon (Hackett-Gabriel)
In the Cage (Banks-Rutherford-Gabriel-Hackett-Collins)
The Grand Parade of Lifeless Packaging (Gabriel-Banks-Rutherford)
Back In NYC (Rutherford-Banks-Gabriel)
Hairless Heart (Hackett)
Counting Out Time (Gabriel)
The Carpet Crawlers (Gabriel-Banks-Rutherford)
The Chamber of 32 Doors (Gabriel-Banks)
Lilywhite Lilith (Banks-Rutherford-Collins-Gabriel)
The Waiting Room (Banks-Hackett-Rutherford-Colliins-Gabriel)
Anyway (Banks-Gabriel)
The Supernatural Anaesthitist (Hackett-Gabriel)
The Lamia (Banks-Gabriel)
Silent Sorrow in Empty Boats (Rutherford-Banks-Hackett-Collins-Gabriel)
The Colony of Slipperman (Banks-Gabriel-Rutherford-Hackett-Collins)
Ravine (Rutherford-Banks)
The Light Dies Down on Broadway (Banks-Rutherford)
Riding The Scree (Banks-Collins-Gabriel)
In The Rapids (Rutherford-Banks-Gabriel)
It (Banks-Hackett-Rutherford-Gabriel-Collins)
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Regarding Trespass, I have a feeling that "Looking for Someone" and "The Knife" are Banks/Gabriel compositions rather than whole group ones - as does this guy, who goes through all of Gabriel's contributions, but I don't know where he gets his information from!
There's also a page on Hackett's website where he talks about each song on Genesis Revisited II, and mentions a few bits of info on composition for a couple of them. Specifically, there is Horizons (solo Hackett of course), The Lamia ("[a] song we co-wrote", he claims - not specifying who is meant by "we"), and Can-Utility ("I was looking for poetical lyrics and the idea of not being deceived by flattery, " says Hackett, suggesting that the lyrics were indeed his).
There is also an interview out there where Hackett indicates that he used a piece that his brother John had written for a section of "Get 'Em Out by Friday" - sorry I can't find it now, but I think it was the "after all this time they ask us to leave" bit. Other than that, I want to say that the waltz that takes up most of the second half sounds like Banks chords, and Gabriel must have written the lyrics at the very least. Whether Rutherford and Collins contributed anything, though, I couldn't say.
Aside from those, I'm not sure why the post I quoted gives Hackett a credit for "Apocalypse", but generally there's probably a lot of good guesses going on.