I also have loads of Uniqlo. I rely on it for those "plain basics" that every wardrobe needs as I know they will have stuff in natural fibres like cotton, linen, wool and cashmere without it all having plastic or stretch shoved in for no reason.
White cotton t-shirts that are not see through
Linen shirts in many colours
Linen blend easy trousers in the summer
Merino wool/cashmere jumpers and polo necks
Puffa vests - one of these under a jacket is the perfect level of warmth for me for autumn and spring
Heattech base layers
DH wears their t-shirts, linen trousers, and merino jumpers.
My teen DSs buy the graphic t-shirts, flannel shirts, and the sporty stuff like shorts made of technical fabrics that still look smart enough to wear out and about because there aren't any logos.
I often get one or two bits from the collabs - I still have quite a bit of old Ines de la Fressange stuff, a JW Anderson long black skirt, and from the Comptoir des Cottoniers collab earlier this year I got a lovely pair of cream wide leg tailored trousers and a navy blue cotton knit short sleeved top.
I don't suit the voluminous or shorter boxy tenty stuff, or anything in dusty pastels or sludgy colours, so I just leave those for others to wear!