Still not a fog lamp, or one that should be used in poor visibility.
OP, budget depending, I would recommend looking at diode dynamics SS3 pods in selective yellow. They offer three levels of output/performance. The sport is the lowest output, and has a very crisp, sharp cutoff. However it does not run hot enough tk keep the lenses clear of snow/ice.
The Pro line has a "softer" cutoff than either the sport or max models. It also offers higher lumen output than either, but this does not translate to higher maximum intensity than the Max model.
The Max model has slightly less lumen output than the Pro. But it both has a very sharp cutoff (which is what you want in a fog lamp) and also runs the hottest of the three models. It will basically never have an issue icing over, outside of arctic circle type conditions.
The morimoto "4banger" (funnily enough using 3 LEDs) may also be worth considering. It is available with three LED options, at "two" power levels. The two lower output models use a Nichia LED, one is just white, while the other is a yellow emitter. Both can be had with their selective yellow filtration front lens. Outputs are very close between these two. The yellow LED + Yellow Lens combo is slightly deeper in selective yellow, but its not a huge difference. The higher output model uses the same Osram LED as the diode dynamics Max line, but is driven slightly harder.
Maximum intensity levels between the high output 4banger and the SS3 max are similar. But the SS3 max (as well as the sport and pro) offer a wider beam pattern that is consistent in intensity from its left to right. The morimoto 4bangers are noticeably narrower, and have a center-weighted beam pattern, which is why yheir intensity level straight ahead of each lamp are very close.