Where can I find out about how many Aboriginal and Torres Strait Islander members of parliament there are and their names?
You can find this information in the Parliamentary Handbook. The Handbook has a list and timeline showing members of parliament who identify as Aboriginal and/or Torres Strait Islander. You can see it here.
The Parliamentary Handbook is published by the Parliamentary Library. It includes information on the service and biographical details of all current and former senators and members of the House of Representatives.
Australian, Aboriginal and Torres Strait Islander flags

DPS AUSPIC
Description
The Australian National Flag, the Australian Aboriginal Flag and the Torres Strait Islander Flag are displayed on flagpoles at Australian Parliament House.
Permission should be sought from DPS AUSPIC for third-party or commercial uses of this image. To contact DPS AUSPIC email: auspic@aph.gov.au or phone: 02 6277 3342.