No. Steven street and Alain weren’t patchy. And Nevin was barely patching. Boz is an over rated songwriter. And the others are lawnmower part song writer.I think Jesse has steadily improved and diversified over time. The early guitar chuggers didn't really impress, but there have been several strong co-writes...
My Hurling Days are Done
Once I Saw the River Clean
I'm Not a Man
What Kind of People Live in These Houses?
Kiss Me a Lot
Smiler With Knife
Jim Jim Falls
I'm OK by Myself
The Youngest Was the Most Loved
In the Future When All's Well...
Gustavo and Mando have both co-written some strong songs and sometimes it has been the lyrics that have been a bigger failing.
Obviously Mark Nevin, Alain and Boz all have plenty of strong co-writes, but the truth is that the standard of Morrissey's solo collaborators has always been patchy.