L1 VISA:
The L1 visa is a means by which workers for a company with specialized knowledge, as well as executives and managers of the company, are able to transfer from foreign offices of the company to offices based in the United States.
In order to be eligible for an L1 visa, employees must have worked for [...]

Adjustment of status is the legal process by which someone who is already in the United State in a non-immigrant visa category can become a lawful permanent resident.  Adjustment is different than change in status, which is another legal process by which someone who is one non-immigrant category changes their status to one of another [...]