That's probably because you have yours set to show the companies you licensed with or you're using an FMO version. I have mine set to show all companies in all states.
And yes, always near the bottom.
No, I see all carriers. And UHC is NOT at or near the bottom. Now if you are looking at their Level 2 rates, sure. But that's for people who answer yes to some of the health questions. Female age 65 in Lee County is $125.75 with UHC. That comes in at number 20 on the list of 49 rates listed (some above and below are multiple rates with the same company like Allstate - and two carriers are listed twice with the same rate which means UHC is 18 on the list). This is without any discounts. But again, that isn't anywhere near the bottom.
It's ok to say they aren't the most competitive, but to claim they are at or near the bottom isn't truthful.