More like lost in space...and MSDN and even the difference between 25H2_English VS 25H2_EnglishInternational. What is English international now??? Before it was eng_gb VS eng_us There's only so much one can keep the track of. I'm keeping track of other things like 3d rendering, renderers, vfx, design. But can't keep track of everything.
There has been a trend to name en-gb products as en international, but not for some versions of Windows. I think for all intents and purposes they can be treated the same. I suppose the "international" designation is intended to cover other countries where en-gb is the official language in addition to UK.