There are numerous different pliers designed for different jobs and many of them have cutting blades. Here are a few that could be alternatives to diagonal cutting pliers, depending on the job.
Concretor’s nippers are designed for gripping and twisting wire before cutting the excess off.
Tinsnips work like scissors and are designed to cut through sheets of metal, although they will also cut wires.
Sprue cutters are designed for cutting off plastic ‘sprues’ from moulded plastic objects. They are sharp and have a pointed tip which increases precision during use. They work like diagonal cutting pliers.
End cutting pliers
End cutting pliers have cutting blades that are at a right angle to the handle. This makes it quick and easy to cut wire flush against an object.
Electronics cutters are high precision wire cutters for cutting circuit board wires.
Cable cutters are designed to cut thicker multi-stranded cables and wires than diagonal cutting pliers. They work like scissors to slice the cable apart.