OverclockersUK: 5700XT, 1050 Ti, 1030
Komplett.ie: GT 1030 and some random Quadro
computeruniverse.net: 1650 Ti, GT 710, RTX 3090 (for $2400)
scan.co.uk: Teslas, Quadros, GT 1030, GT 710, GT 210
That's it. No other RX 5000, no RTX 2000, no RTX 3000, no RX 6000.
So that's two of them don't even have gaming GPUs in stock, as an entire product category, and the others you get some last gen low end cards and one retailer with a 5700XT. It's a little more noticeable here.
Half of the ones you have listed are UK retailers.
I haven't checked the others but computeruniverse.net has various RX 5000 series GPUs in stock. So does mindfactory.de at the moment.
The new RX 6000 serious GPUs have been selling out quickly but they were just released this/last month and new stock does keep popping up.
The only products they havent run out of are listed at 2x the markup.