The Australian Skilled - Independent Visa (subclass 189) is an Australian skilled visa for skilled workers who are not sponsored by an employer, a state or territory, or a family member. ... You must score at least 60 points on the Points Test to be eligible for this visa.
The Skilled Nominated Visa (Subclass 190) to Australia allows skilled workers, who are falling short on the points assessment criteria for the Independent Visa OR only have an occupation on the STSOL obtain a nomination from the Australian territory or government to live and work in Australia as Permanent residents.
DHA announced the abolishment of the Temporary Skilled Work visa (subclass 457) and launched the new Temporary Skilled Shortage Visa (TSS) in March 2018.
The Skilled Regional Nominated Visa (Subclass 489) allows Skilled workers, who have obtained additional points from Regional State Sponsorship or Family Sponsorship (staying in the same region) to live and work in Australia for up to 4 years.