That Sigma 50-500 or the 150-500 would really narrow most of the lenses in your list down to only one lens you'd have to lug around. I say Lug because its a pretty heavy lens.
The 11mm lenses arent Fisheyes as Fisheyes give distortion on the edges of the images usually. The reason you use a fisheye is to get a funky look. If you want that same width without the distortion, then you go to a mm length that is similar, but not billed as a fisheye. The Sigma 8mm fisheye would only really be used when you want to really have a funky/cool looking image, but wouldnt be used daily, at least it wouldnt if I owned it.
This shot was with the 17-35mm Sigma lens set at its widest 17mm setting. Notice no distortion except for the little bit of blurred edges on the ends because of how wide it is.
This shot was taken with the 15mm Sigma Fisheye and you can see the distortion caused at the edges and the bottom of the frame due to the fisheye.
One thing I really like about the fisheye is to use it for product shtos. It allows you to get amazingly close to your subject but still keep everything in the frame. It will usually bend lines on something and make it look pretty cool
This shot I was only a few inches from the grill of the Chevy truck
This shot I was tucked up and under the wing, yet still got all of it in the shot
This is a funny story. I was working on a Biker Build-Off as the Still Photographer and Arlen & Cory Ness were to be guest hosts for a day. I had this shot of one of Arlen's Bikes and I printed it out to have him sign it for me. When I asked him to sign it, he sat looking at the image and asked me "Where did you get this shot? I've never seen it before." I told him I had taken it at a bike show and he asked if he could keep it because he wanted to hang it in his office.
These last images were all taken with the Sigma 15mm Fisheye