For cutting steel cable, you should really just buy dedicated cable cutters for steel cable and wire rope.
One of things certain manufacturers of wire cutters used to specify, was not only the MAXIMUM wire gauge and type cutters were made for, but also the MINIMUM wire gauge, since small hard, high tensile wire were mire likely to cause a small pressure point, and nick cutters, and wire rope/cable, is basically made ip of numerous strands of high tensile wire.
Knipex, Midwest, Felco, HK Porter, and various Japanese manufacturers, all make cable cutters for small high tensile wire rope.
HK Porter used to rebrand small wire rope cutters from more than one Japanese manufacturer, and in the past, Knipex did as well, although I believe the current Knipex offerings are homemade in Germany.
As for “high leverage” wire cutters/dykes, sometimes they are really necessary.
Some hard wire, like piano wire and springs, are just too hard and tough to cut with regular “single pivot” wire cutters.
Angle grinders, and other powered abrasive cutters are sometimes an option, but space considerations, and safety issues can be an issue.
Grinders spin, and if the spring or wire is in a mess of other material, eire and material can get caught, and can wind up around the grinder.
Sparks can also potentially start fires in upholstery, or in locations around flammable liquids and other materials.
Hacksaws might be a solution, but are large, and a pain to use for more than a few cuts.
Mini Bolt Cutters aren’t necessarily fatigue free, but will allow relatively safe use for numerous cuts, in a relatively confined area.
As far as high leverage pliers, sometimes you need to grip stuff very strongly, and regular pliers can’t apply enough leverage.
Vise grips and other locking pliers are a more readily available, cheaper option, and are usually fine if a piece needs to be gripped a while, but if you need to keep changing the position of the gripping plier, then it gets tiring and annoying to have to keep releasing, and then relocking Vise Grips, which us not an issue with non-locking extra high leverage pliers, like the Snap-On pliers. I don’t own these just similar higher leverage designs).
Harbor Freight announced clones of the Snap-On design high leverage pliers more than a year ago, but the pliers haven’t shown up in stores yet, and the newer “long slip joint” copy of the SO design, just went up in price $5 before I’ve ever come across a pair in stores.
For those who complain about Harbor Freight copying Snap-On designs, that particular design goes back to the early 1970s, and is well out of patent protection, and was a simpler combination of a previous patented design, combined with the form factor of a basic slip joint plier, so their really are no “IP rights” violations involved.