What's the difference between Labour and Labour Democrats?
Essentially, Labour is a more broad-tent party that is focused on, well, labour unions, but also has long since lost its explicit socialist roots and is more a centrist-y wishy-washy party. The left-flank of the party split recently to form the Labour Democrats, which are explicitly climate activists and socialists. It's important to note that Westralia is a heaving mining and export country, something that Labour is entirely okay with. Labour is also okay with... not the
best record of treating the country's indigenous population and minorities, while the Labour Democrats are. Both Labour and the Nationalists take a more loose interpretation of the whole "treaty that sets the eastern border" for mining settlements, while the Labour Democrats pledge to halt all illegal mining and offer compensation to impacted groups.
Interesting that Austrailia is an island part of the continent of Oceania
This developed for several reasons. Darwin is considered part of Nusantara (the Indonesia archipelago), as it has close economic and cultural ties to the region. It was often collectively administered as Nusantara with the rest of the British East Indies during the (explicit) colonial era. This helped to develop the mentality that Australia is merely an island, albeit one that is pretty massive overall. The settlement of Australia (country) and Westralia further helped to solidify this divide, as the language of the treaties used explicitly stated that they Australia (landmass) was an island, mainly due to the contact with the two islands in Aotearoa as well. This is not to say this has no detractors, many do say that Australia (landmass) is a continent, but simply the development of how it was defined was different leading to how it is today.