As someone stated earlier, the best I’ve found are the Remoras. They seem to get incrementally better with each new generation. I’m giving their latest version with the belt clip a trial right now with my G26.
I stated that.
The beauty of the standard Remora (I use the ones with the reinforced top) is that since they don't hang on your belt, they don't sag your belt & the belt types that work with them are not as critical as with a holster that hangs on the belt.
I use them up through guns the size & weight of a steel framed Commander & they work extremely well, do not loosen & & stay in place through any normally sane activity.
I've got more than a dozen holsters, including some high end leather, & while they are good, for an everyday, easy on, easy off the Remora's are hugely under rated & they are cheap & one model will fit more than one gun.
I've not tried the newer version with the clip, so I can't comment. But a G-26 is a relatively small gun & is much easier to carry than a G-19, but the Remora carries a G-19 perfectly fine.
MM