Time for some what if/design sketches/studies. Obviously since few of these even got past the doodling phase, obedience to the laws of physics is sometimes optional...
Hawker Siddeley HS.1202-9: Looking at it, it clearly seems to be a 4th-gen aircraft that was superseded by the Typhoon
BAE P.110. The resemblance to the EAP demonstrator and eventual Typhoon is quite clear
This JASDF FS-X concept before they decided to go with a gold-plated F-16 has almost the exact same configuration with the twin vertical tail canard delta
BAE P.106B Reminds me more than a little of the Gripen except for the cranked delta wing and wings terminating further forward relative to the tail
Vought's mockup of their submission for what became the F-14 before they were eliminated from the competition
Concept art of another Vought design (X-100)
BAE Wharton P.103 tilt engine design is just a reminder that modern V/STOL aircraft are already quite tame from some of the ideas they've had before.
BAE P.1214-3 concept really brings home the bizarre.
Some neat artwork in this NASA document on mockups that were run through their wind tunnels:
https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19890000646.pdfLockheed also had the CL288 design study of which I can't find a good picture of. It's an F-104 with two wing-mounted J-79s because what the F-104 really needed was more engine. I suppose the configuration resembles the Bristol 188 research aircraft with the T-tail and twin wing-mounted engines