What about the second-source vendors? Historically I know there were Hitachi ("HD" prefix), Toshiba ("TMP" prefix), and Signetics ("SN" prefix) parts. At one point I saw a modern-looking Atmel data sheet for a TS68C000 (Thomson/STMicro license?), but I don't know how recent that actually was.
The Hitachi line, at least, seems to be explicitly EOL by Renesas. I'm not familiar enough with the other vendors to know who might have picked up their licenses.
I suspect those are all gone too. TS68C000 went EOL in 2010 -- it was produced by Thomson-CSF, which was acquired by e2v.
One interesting avenue to explore might be the Sega Genesis. It's still being produced in Brazil, believe it or not -- and there must be some sort of 68000-compatible processor at the core of those.
The Hitachi line, at least, seems to be explicitly EOL by Renesas. I'm not familiar enough with the other vendors to know who might have picked up their licenses.