Back in the day, Saab was to Volvo what BMW was to Mercedes, I think. I liked Saabs, and BMWs. Saab of course is gone as a car. BMW has softened the edges of their US products a bit. I think most BMW drivers would be happy with a Honda and not really know the difference other than price.
One could throw in a Mazda=Toyota/Honda comparison also, Mazdas tended to be more sporty, and then Pontiac-Chevrolet. Some of this is largely illusory.
I'm surprised still that Pontiac was not retained as a brand, even instead of Buick. I have no clue what a Buick is today, a somewhat upscale Chevy. And a lot of Caddy components are from the GM parts bin, though a few Caddies are pretty unique.
I always wanted a car with good handling, but of course went through a couple decades of minivans. I liked the GTI a lot, of course, but was stunned when they wanted $3 K in maintenance after 33 K miles. I had a 2005 Cadillac CTS that went 85,000 miles with very little maintenance, and only one problem (carbon cannister). I think I had the brakes done once, just pads. The 2014 Caddy had those 35 profile run flats that were a constant problem. Otherwise I liked that car a lot, but it was too big for the city.
I have driven a Scuderia on a track, not very well, and a CTS-V and ATS-V at COTA, that was pretty fantastic. The CTS-V was a bear.
Alas, I'm probably past having a sporty car but I dream.