My casual ride errand bike and my off road bikes have always had metal pedals with the set screw style pegs or teeth or whatever you want to call them. The alloy or plastic pedals that have serrations cast into them don't grip at all well once they wear to a rounded shape.

When I ride offroad I wear good shin and knee guards that have a heavy Cordura wrap around to guard against hamburger shin or back of the lower leg. And that way my knees are also protected. Nothing worse than jamming your kneecap into something that doesn't like it.

So yeah, just about anything like those in the picture that GerryinHouston posted are good for me. And I like that for a few bucks I can buy a box of 100 replacement set screws for if/when the originals get smoothed off too much.

On the other hand my road riding bikes all use old style Shimano MTB clipless pedals and shoes from 20 years ago. When I chose those over "proper road bike" clipless there were not a lot of options that were double sided and the road clipless shoes all had the big lumps on the bottom. But after trying them for dirt riding one day I realized that I'd need plastic surgery very quickly if I kept riding with them. Thus the switch to the set screw style toothed platforms WITH the mandatory lower leg guards.