I have a size 9.1/2- ish standard width left foot. I have an extra wide, very high arched right foot about size 8. This is probably the result of breaking my right leg twice in two years as very young child, my top of my right foot looks a bit like a loosely clenched fist.
I have to buy a 9 1/2 to get the length for my " normal " foot, and extra wide to compensate for my high arched foot which is about 7.1/2.
The body is marvelously adaptable, especially when younger, so I've managed to keep running for well over 40 years to date. As mentioned up thread, New Balance make a wide fitting shoe, and I ran in them for many years. Of course as running shoes became more of a fashion item the manufacturers felt the need to constantly change them, cosmetic changes year on year were fine, changing the shoe geometry meant that a shoe that " worked " for me no longer did so.
For quite a while now I have been running in " Hoka ", the " Plush " version of their line up. I usually buy last years model often direct from Hoka as there are some excellent prices, and free delivery returns. I would go half a size bigger in Hoka's, and some say they look a bit like " clown shoes ", but they may well be suited to your feet too.
With regard to Clarkes, I used to wear them all the time, then they shifted production abroad and the quality plummeted. I remember going in to the Clarks shop in town and realising something was off about the shoes I was trying on. They had shifted production to Romania, the quality wasn't there and they still wanted to charge a premium price. When I have to wair a " proper " shoe I find Hotters suit my weird feet.