The IHPTET T/W goal was 20:1, which is 2x better than we do today (F414/EJ200 are close) and 3x better than the F135.
I was pretty close to IHPTET at the time and it was recognized that it would, in the appropriate cycle, provide you with the dry thrust needed for non-afterburning VL (the use of A/B having been recognized as a nonstarter by then.)
The ATFE was always aimed at 10:1, but that didn't take a 2D nozzle into account, which is why the F119 is relatively heavy. If the F135 was a 10:1 engine it would weigh 4000-4300 lb (depending on whose thrust figures you believe) but it weighs 6500+ lb (says P&W). That's a lot for a length of straight jetpipe and some thermal-management kit.