Part No.....................Manu...............Chipset
939A8X-M.................ASRock............M1689
A21G (V1.0)..............PC Chips..........K8M800
CK804K8MA-KRS.......Foxconn...........nForce4
CK804K8MA-KS.........Foxconn............nForce4
K8T800PRO-A53........PC Partner........K8T800 Pro
KTMNF3-250..............FIC..................nForce3 250
KTMNF3-Ultra............FIC...................nForce3 Ultra
NF4K8MC-ERS...........Foxconn............nForce4
NF4K8MC-RS.............Foxconn............nForce4
Rhino AS480-M9E......Octek................RADEON XPRESS 200
Rhino AX480-M9E......Octek................RADEON XPRESS 200 P
RS480-M (1.0)...........ECS..................RADEON XPRESS 200
RS480M2-IL (MS-7093)...MSI..............RADEON XPRESS 200
RS480MS9-A56S........PC Partner........RADEON XPRESS 200
RX480M2 (MS-7093)...MSI..................RADEON XPRESS 200 P
Personally, I wouldn't use a PC Chips or PC Partner board.
I also thought Octek was out of business, but apparently not. They used to make great boards in the 486 and Pentium days, but very expensive.
This is as complete a list as I can come up with in 10 minutes.