I'm quite happy that comfy sportswear and trainers are in and I think it will be likely to stay that way. People got used to wearing leisure wear during the pandemic and don't want to cram themselves into more structured and less comfy clothing again. I often spend most of the day in gym wear as i mean to do a work out before getting dressed properly (and keep putting it off) and I always used to feel scruffy but now I fit right in! I do think it doesn't look great though and very little individual style but hey ho.
I work in the city and there's definitely been a switch from traditional office attire to more smart-casual. Men still wear suit trousers (or sometimes smart jeans) and shirts but no tie. Women tend to wear smart-ish dresses or midi skirts and structured tops. So quite smart but not as much as pre pandemic when it was usual to see both men and women wearing a suit jacket/blazer daily but that isn't bothered with now. If it's chilly it's just as likely the extra layer is a plainish jumper or fitted cardigan. I've got to admit I haven't paid much attention to what people wear on their feet. Will have to have a look! I still wear heels around the office (black slip on trainers for the commute) but that's definitely unusual these days. I will add that I work for a city law firm so dress is still likely more conservative than most industries.
Puffa coats are everywhere in London and where I live (Berkshire). I can't bear the look of them. Makes the wearer look like a hot water tank waddling along. I have a couple of smart wool coats, a leather biker jacket (have always been a rocker) and for casual wear a green parka - the sort 90% of mums were wearing 10 years ago. I hung onto mine because it's so warm and comfy, though hideous. But have found I can't wear it if I go in any shops as i get mistaken for a middle aged shoplifter (seems to be the combo of scruffy/ hood/ trainers plus being quite slim for my age i.e. heroin addict vibe that does it). I won't be replacing it with a puffa though!
My casual (non gym) look is still skinny jeans or jeggings (all black) and am delighted combats are back and have just bought a pair (black like 95% clothes). Black trainers, black fitted tops (not crops) and a zip up fleece or waterfall cardigan (also totally out of fashion) if I need an extra layer. Trainers always plain black and not chunky. I think the white chunky ones make legs look like golf clubs. I also have several fitted flowery dresses which are totally out of fashion but which i love and wont be giving up. I'm really happy with my style as I've tried a lot of different things over the years and this is what really suits and flatters me. Completely agree with posters who've said when you get to middle age you end up in that sort of place rather than blindly following the tribe.
My son nearly 18 is almost always in sportswear and bucket hat mostly Nike but still likes Adidas. Also Tommy Hilfiger and Lyle &Scott. Won't wear a coat.
Daughter nearly 9 wears little tshirts and shorts whatever the weather. Will wear jumpers but not coats and big clumpy DM style boots. I've tried and tried to get her to consider other stuff, mainly for weather appropriate reasons but she's adamant this is what she likes. I dont think it's a tribal thing (yet) as her friends wear a mix of track suits (if streetwise) and dresses (for the less streetwise).