Hi Peter thanks for this. I'm European and I live and work in the USA (L-1B visa, no green card). If my company sponsors a green card application, how long is

Hi Peter thanks for this. I'm European and I live and work in the USA (L-1B visa, no green card). If my company sponsors a green card application, how long is the process? If they don't, what's the easiest option for me to move and work here permanently (including the right to change company, which I don't have now)?