I use the Salsa Sidewinder, now called Side Entry water bottle cages on my gravel and MTBs. The side entry makes access easy when dealing with less area inside the main frame triangle, especially when utilizing frame bags. I've not had a bottle dislodge on the roughest terrain. The Side Entry is easily reversible for lefties or righties during installation. Construction is hefty, so inadvertently distorting or bending the Side Entry is unlikely. I'd recommend them to anyone looking for durable and versatile features mentioned.
Got three of these for my gravel bike. Kept the bottles secured over technical stuff, which is why I got 'em. They also adjust for tall or short bottles which might be useful if your bike is tight on accommodating three cages. I've made the mistake of using less secure cages for lighter weight and regretted it.