You nailed it. Hi-Intensity APC+ at 10:1 can clean everything including carpet, leather, and clear plastic gauges. Honestly, although not the best option, you could probably even use that dilution to get streak free windows. I use 10:1 paired with a magic eraser on painted surfaces to remove paint transfer prior to polishing. I also use it to clean wheels. All at the 10:1 dilution. I stopped mixing it at stronger dilutions because I use D108 Super Degreaser at 4:1 for Tires, wheel wells, and engine bays.
If you are looking for a cleaner for your personal vehicle that is truly safer than McKee's High Intensity APC+ then I'd HIGHLY recommend Blackfires Interior Cleaner. It is expensive but you could probably use it to wash your hands without it ever burning or drying them out. I could never justify having Mckee's Interior Cleaner as well as APC+ but Blackfire's interior cleaner is truly the safest/highest quality interior cleaner on the market and if I was an enthusiast it would be the only cleaner that would touch my interior.