I voted #6, "Reaching a nest egg goal/FIRE confidence," but I'm applying that to myself. I'm 54, still working. Logically, I know I'm most likely financially independent, so I've hit the "FI" part of it. But, emotionally, stuck in OMY (One More Year) syndrome. I figure once I get my emotional side in synch with my logical side, I'll have that confidence, and retire.
To me, if you retired from a full-time job, and only do the part time consulting as more of a hobby, I'd call it retired. Now if that "part time" ended up turning into mostly full-time, and you depended on that income, I'd call it "still working."
I had a supervisor back in the 90's who had retired from the Air Force, and gone back to work full time as a government contractor. I never thought of him as "retired," even though technically, he had retired from the Air Force and was getting a pension. I don't know if he would have been able to support his lifestyle on just an Air Force pension. I don't know how long he had been in the Air Force, but he was around 53 when I started working with him, so I have a feeling his USAF pension probably wasn't that big.
I've also known a few people who were under the old CSRS retirement system for the US government, who retired and then went back to work as a contractor. I never really thought of them as "retired" either. At least, not until they hung up the contractor job, too. Some of them had cut back to part time contracting work, so maybe I'd think of them as "semi-retired."