All of the options that you mentioned before make it sound like an SLE. what you need to do is go in the trunk and look for a lable on the Spare tire cover IF there is one that says H4U then you have a Bonneville SLE Like many of the members here. I have one zzzzzeke, BonneMEMN, Princess Jenie all come to mind (sorry if I left anyone out
Trim around the Windows and the "belt" can either be chrome or black. I have seen SLE'* with both
look at our cars and see for your self.
the RPO lable in the trunk will tell you all options in the car
if you have any questions PM me and we can talk