It would blow your budget somewhat, but there is certainly ONE manufacturer to at least look at and smile.

As others have been saying, Keychron is currently the go-to for recommendations for first keyboards. They have a bewildering variety of layouts, most of them at several price points, and they have better European "ISO" support than most pre-built companies.

For switches, if you want it to feel a little more like your old ThinkPad, the biggest move in that direction would be to switch from Linears like your Cherry Red to "tactiles" like Browns. Those recommending "hot-swap" boards have a good point, but you'll want to make sure the printed circuit board is well supported if/when you put in new switches. The most common damage people get with modern mechanical keyboards is a hotswap socket tearing away from the PCB.