Nice work on these: that's a classy colour scheme. I had no idea there were so many sculpts for Confrontation.
There really are loads!
Citadel released 11 techs, 18 gang leaders and fighters of various types, 3 scavvies, 1 ash waste nomad, 5 bounty hunters, 5 Bratts and 3 Adeptus Arbites (I include them as their concept sketches accompanied the White Dwarf articles).
Then Marauder released a further 20 figures (4 each of Techs, Psykers, Ash Waste Nomads, Venators and Scavvies).
Then there are the unreleased figures - 7 scavvies, 4 Helmawr gangers, 5 Bratts and a gang sculpt by John Blanche.
All of the above were sculpted between 1990 and 1992. Crazy really that they had a full range ready, but it was shelved and replaced by the Necromunda figures only a year or two later.