I think you guys are talking about two different things.
@mtuckman is right that GE/Jasco still makes switches in the traditional toggle format.
In this picture, a toggle is on the left and a rocker is on the right.
However, since Leviton never made the DZS 15 in a toggle format, I believe with the OP is referring to is a “retractive” or “momentary contact” paddle switch where instead of pressing on the top for on and the bottom for off, you just press once each time, usually at the bottom.
Leviton was always an outlier in this regard and now that they’ve switched over to rocker, I don’t think there’s anyone making Z wave switches in the retractive format.
However, what you can do is get any of the in wall micros. There are good ones made by Aeotec, Fibaro, and Qubino and budget ones made by vision, among others. They fit inside the lightbox.
Then you can use any switch you want with those, including retractive switches. There are still nonnetworked retractive switches made in a single gang format , particularly for garbage disposals, so you should be able to find one to use with the micro.
Here’s a typical one from Pass and Seymour where you press at the top. There are lots of brands, though, including ones where you press at the bottom, this just happens to be when I’m familiar with. Again, this is not a networked switch, so you have to use it with an in wall micro to get it automated. But I just put this here to give you an idea. Although they call it a “rocker” they mean, like the Leviton DZS15, that it should blend in a home that is using other rocker switches, but it’s a momentary and you only press at the top, never at the bottom.
Unfortunately, I’m still not feeling very well, so I may not post much more today. However, The micros are very popular in the community so lots of people can answer any following questions you might have.
Make sure you specify whether you are looking for one that looks like a regular switch or whether you are open to other styles like a push button or a touch panel.