DDR5-7200 is CL 36, DDR5-7400 is 38 and DDR5-4800 is … 40?
Those looking for a large DDR5 tank with decent timings should consider the Corsair Dominator Titanium series. The three kits each have two 24GB DIMMs, run at 1.40V, and interestingly all have a DDR5-7400 profile, although it’s not guaranteed to work. All kits support the new iCUE software for RGBitis and the new version allows you to create custom profiles that you can load just like an XMP profile into your UEFI.
When overclocking, TechPowerUp was able to run the DDR5-7400 kit to DDR5-8000 with only 1.35V, however reducing the timings at this power level was not possible. Their best results were at 1.45V, they could run stable tests with the DIMM running at DDR5-8200 with 38-50-50-90 timings. You will definitely want to put them on an Intel system, they will boot with AMD but not at the same frequencies as on an Intel system. Note that these guys are very picky about which Z690 boards they will work with.