Studio monitors are also considered nearfield speakers since they are typically located on the recording console as opposed to sitting on the floor in a room.
Well, small ones are, at least. No shortage of non-nearfield monitors in soffits 10' or more away from the console.
I've got NS-10s, JBL 4401, and Auratone monitors from my days in the studio. Larger JBL pairs were in the office and garage(!) before we moved. We'll see where they end up. I still have way too many speakers.
Engineers use the small monitors to have a reference sound that is consistent/predictable from studio to studio that they may work in. The Yamaha and Auratones were the most popular of these back in the day. (Other options included the venerable Radio Shack Minimus 7's.) The key is not that they are absolutely fantastic sounding speakers, but rather that they provide a familiar basis for comparison of the many other variables in the studio, including the room acoustics themselves. (Near field use helps control that.)
During a mix, engineers will switch between all the different monitors available in the room after making almost every little tweak in EQ, compression, level, reverb, etc. Constantly switching back and forth. Comparisons. Too little, too much? Check on the various monitors. Some will reveal the change, some will not. It's necessary because nobody has control of how it sounds after it leaves the production team. Except the home/car listener, and their EQ and setup, and room, and components, and hearing, and... It really is a balancing act.
In the last studio I worked in, we used Fostex LS3 monitors, and happened to sit in their near field, due to space considerations in the room itself. Tough act to follow.