I also see that GM has switched the tahoe to IRS for 2021. Im assuming the surburban to. That means that there is zero "main stream" SUVs with a real axle in back.
Ford is also supposdly devloping an IRS for upcoming high trim 150s. Guessing it wont be long till that trickles down to.
Its aggravating, if the market would of stayed in sedans where 90% of them belong we would still have real trucks. Instead of wanting trucks that perform like sedans.
Here's the problem: In the 1970's (and earlier, probably), the station wagon was the family hauler. Or, people bought full size vans, if they needed more room. EVERYBODY made a wagon, because that was what people wanted.
In the 1980's, Dud(ge) had this brilliant idea that they would move family hauling into this thing called a mini-van. They had more room than the full size wagon that the family was used to hauling a family with, but they were smaller than the full size van (ads called them garageable). Because the Dud ones were FWD (and eventually everybody else went that way with their minivans), they were easier to drive than the full size van. In fact, they handled like the car that mom would have rather driven.
In the late 1990's, SUVs became capable family haulers, as manufacturers began to downsize their SUV offerings, and make them more car like. Suddenly, the family could get a capable people mover that handled like the car they would rather drive, and with available AWD or 4WD, could better deal with the harsh conditions that some people (rural, for example) dealt with.
Through all of that time, those who didn't have a family still bought coups and sedans. BUT, over time, the sedan's trunk became less useable, and hatchbacks were off the market, because nobody bought them any more (why buy a small hatchback when you can use the minivan for that?). The trunk in a 2004 Ford Focus, or a 2009 Focus, for example, is a good, sizeable trunk. BUT, in the name of aerodynamics, the opening became smaller. Compare, for example, a 1992 Ford Tempo, and a 2004 Ford Focus. the trunk is probably the same size, but the Focus has a much smaller opening.
In 2010, when I bought my Fit, Ford didn't have a small hatch, PERIOD. GM had the Aveo, but nothing bigger than that (Cruz didn't have the hatch yet). Dud(ge)? I don't think they had anything, either. Toyota had the Matrix, Hyundai had the Accent, and Elantra. Kia had the Rio5 and Spectra5. Honda had the Fit and the Insight. I wasn't even considering a sedan at the time, because a sedan didn't have the large trunk opening to facilitate loading.
The bottom line is that people moved to SUVs and CUVs because sedans are now awkward to load. It's possible to load a bag of water softener salt into a 2014 Focus sedan (I've done it, a friend of mine has one), but it's easier to load it into the box of my truck, or, now, the trunk of my '95 Taurus), but difficult, because you virtually have to slide it forward to put it in, you can't just lower it straight down.
Don't

on me for not buying a sedan, so that your SUV can handle like the truck you want it to be. Don't

on me for wanting my small(ish) SUV to handle like a car. Consider that the SUV market has adapted because people like me are buying them. People who want a capable people mover that still handles like a car, has lots of room for cargo, and (in the case of a lot of rural people that live in my area) ground clearance because we drive on gravel roads that get muddy when it rains, and offers AWD or 4WD for that muddy gravel road, and the snow that doesn't get plowed as fast in my small town as it does in the city, or blows in more because there's nothing to stop it.