The CX version of the rules shows the following "affiliates" for a OW Explorer:

AMERICAN AIRLINES - AMERICAN EAGLE (INCLUDING FLIGHTS OPERATED BY EXECUTIVE AIR),
TRANS WORLD AIRLINES, AMERICAN CONNECTION (INCLUDING FLIGHTS
OPERATED BY CHAUTAUQUA, TRANS STATES AND CORPORATE
AIRLINES)

BRITISH AIRWAYS - BRITISH MEDITERRANEAN, COMAIR, GB AIRWAYS,
LOGANAIR, MAERSK AIR LTD, SUN-AIR, ZAMBIAN AIRWAYS,
BRITISH AIRWAYS CITIEXPRESS, CITYFLYER EXPRESS ,
REGIONAL AIR (FLIGHTS OPERATED BY AIR KENYA).

QANTAS - QANTASLINK OPERATED BY IMPULSE/EASTERN AUSTRALIA/
NATIONAL JET SYSTEMS/SOUTHERN AUSTRALIA/SUNSTATE
AIRLINES/JETCONNECT AND AWOPS FLIGHTS OPERATED FOR QANTAS
*ALL FLIGHTS MUST HAVE QF DESIGNATORS

IBERIA AIRLINES - AIR NOSTRUM, BINTER MEDITERRANEAN.

LAN CHILE - LAN EXPRESS, LAN PERU


Note that Australian Airlines is NOT permitted on a OW Explorer. However, the rules for a Global Explorer (which has a wider range of airlines available) says:

"Valid on AUSTRALIAN AIRLINES (AO) provided that when AO participates on an itinerary,
QF ticket stock must be used."