My favorite Kenwood models, for VHF use, are the TK-2170's followed by the TK-2140's. The UHF versions work fine on the Ham 70cm band and should work down to about 440 MHz which covers most of the simplex section and the repeater section of the band. The radios may function lower. You'll need to test your radio and see what it will function down too.
https://www.icomamerica.com/en/amateur/amateurtools/US-BandPlan-Update-1-2020.pdf
The UHF models come in several band splits, most common is the 450 to 490 MHz or so ones. There are some other radio models that work from 400 to 470 MHz, but seem to be really rare to find.
The 16 channel radios are OK if you want something simple to use. They're good for programming in your local repeaters, keeping in a glove box or handing out to family members. There are 2, 4 and 8 channel radios out there but personally I'm not interested in those due to limited channel capacity. The 16 channel models I would consider as the minimum usable.
The issue with any of the commercial radios is they DO NOT have a VFO like a Ham specific HT would. Some of the radios can be modified for "front panel programming", which requires removing a diode or resistor from a circuit board plus enabling it in the software, but the actual programming must be done to an empty memory channel. The procedure is rather cumbersome and covered in detail in the radio's service manuals. I've never modified any of my radios, easier to use the software.
One work around however is to program a sequence of memory channels using the channel spacing for the band used. On UHF it's typically 25 KHz. So I would start at lets say 440.000 then the next memory channel is 440.025 etc. The channel name would be the frequency like 440-000, 440-025 etc. That gives a decent simulation of a VFO using a fixed step size. The radios have "zones" where you can group channel memories together. For the simulated VFO I stick them all in their own zone labeled "SIMPLEX" for example. The better radio for this is the TK-2140/TK-3140 series since they have a total of 250 memories. The 128 channel radios it gets a little cramped.
https://pdfs.kenwoodproducts.com/9/TK-2170&3170Brochure.pdf
The below is the same as the TK-3170 but has trunking, which you'll never use, and uses the same software. Works very well for GMRS too.
https://pdfs.kenwoodproducts.com/12/TK-3173BrochureRev.pdf
The below radios use the multi pin connector, like some Motorola radios, for the speaker mic's and programming.
http://www.swscomm.com/kenwood/TK-2140_3140.pdf
There are some higher end Kenwood radios that you'll end up paying more for used with extra features you'll likely won't use except for the higher channel capacity.
https://pdfs.kenwoodproducts.com/10/TK-2180&3180Brochure.pdf
The below radio is like the TK-3170 but has a more basic feature set.
https://sieuthimasomavach.vn/upload/tk22123212-brochure.pdf
Whatever you buy DO NOT purchase any Kenwood "Protalk" radios. They are normally only 2 watts and come setup with a list of programmed frequencies to select from, which you can't change. The frequencies are all from the business pool, none are useful for Ham or GMRS use. You'll see these being sold at times with what looks like a good deal, until you discover the limitations, then they end up in the junk draw. Fortunately I did my research before purchasing when looking at an unfamiliar radio model to add to my collection and avoided the mistake.
If you're interested in Motorola, Icom or Vertex commercial radios there are some experts here on the forum, I'm not one of them.