If you don’t like B&W, you should avoid tweeter types other than silk and ribbons, both flat and folded. The Wilsons you like use soft domes, IIRC. IME, in an otherwise well voiced speaker, these tend to be free from harshness and listening fatigue, source material permitting, of course. YMMV. I haven’t heard them, but the Rosso Fiorentini Elba 2 fits your profile quite well. A review I read suggests they would give you what you want at $6k the pair. https://www.audiothesis.com/product-page/rosso-fiorentino-elba
Of course, the speakers I have owned for over 10 years are also worth auditioning. My Ohm Walsh 2000s have a moderately small footprint, soft dome tweeters, and sound much fuller and warmer than B&W speakers, IMHO. They are $3800 the pair, USA made, and come with a 120 day return option. You will never confuse them with Wilsons, but for the price come closer than anything else I have heard. And I do like the Wilson house sound.