Interesting, I didn't know Japan was also on NTSC. That explains the way PAL turned out. I found a reference on Wikipedia:
https://en.wikipedia.org/wiki/Trinitron"The decoder inside the UK-sold Sony color Trinitron sets ... had an NTSC decoder adapted for PAL. ... Any phase errors could then be compensated for by using a tint control knob on the front of the set, normally unneeded on a PAL set". Presumably also applied in other PAL countries too, or they entered those markets a little later.
TV's to choose in 1979 were probably British Ferguson, Dutch Philips, and German Grundig. In 1989, replace Ferguson (I think they were taken over sometime in the 80s) with Sony. Philips were the most likely to innovate and bring out new ideas, like Laserdisc (with MCA) or V2000 video recorders, that was best quality of the three, and first format to leave the market.
I also only started being aware in the 70s. Portable Radios seems a very similar picture to the US - Sony was here, but no one really had the market. So plenty from Philips, Braun - with that iconic design that gave the iPod design, Brother at the more expensive end, along with lots of cheaper makes from both Europe and Japan. ITT was about the only non-professional US make I can remember with much presence here. There's bound to be one I missed. Short wave was Grundig and Philips for the hobbyists, with a few from Brother.
Brother are still going, and doing quite well in DAB radios, especially with models that are digital versions of 50s and 60s successes. Tannoy is the common generic term for a PA system here, they moved into home audio and speakers. They're long bought out into a group making hifi and speakers, along with Quad and Wharfedale. German Dual are still around, and were one of the mid range but quality audio and turntable makers of late 70s and early 80s. Now I think just expensive turntables after a buyout or failure or two.
Walkman was, of course, huge. I think that and the ghetto blaster fashion pushed all the Japanese brands right to the front of the market in the early 80s. Even though the boombox was also a Philips idea they were never the most desired brand. Philips kept their reputation for TV though, with some of the best late-CRT models.
So Japan and Sony race ahead, Sony's former mixed reputation being thoroughly forgotten, and in the process completely transformed the market. Few of the older brands could keep up. All the Japanese makes became a success - Pioneer, Sanyo, Sharp, Aiwa, Marantz, Panasonic/Technics, Hitachi etc, even though one or two weren't very good yet! Then Sony upped the stakes with the remarkable pro Walkman models - that few could respond well to.
Japan ended up taking the reputations for just about everything except high-end hifi and notably speakers - where they struggled, but even there they made some inroads. Several Japanese brands started designing and making speakers in Europe or using Wharfedale or Tannoy. I think Panasonic/Technics and Denon may still.
I'm sure I forgot a few bits of the timeline. :)