The UK Tempest programme is basically a modern day YF23 - https://www.raf.mod.uk/what-we-do/team-tempest/Up close YF23 walk around:
What a beauty. InshaAllah, Azm based on YF23 will come to fruition.
Just shows you how far thinking the Northrop Grumman designers were. Basically 1 generation ahead of all of their competitors ( and that was lost on everyone it seems! ).