I'm not that good with bits, but I can tell you that a kimberwick bit is a lot harser than a snaffle and a snaffle is generally referred to as a training bit.
There are many kind snaffle bits available at the moment, but the French Link snaffle bit, a bit that has two joints in the middle rather than one, is considered one of the kindest.
A kimblewick bit has a slight curb action. A snaffle can be plain or jointed but a kimblewick is normally plain.
A D-ring bit can be a snaffle bit. A snaffle is any type of jointed bit. But not all snaffles are D-rings; a D-ring is a bit where the ring is shaped like the letter D.
A ( gentle) bit for a horse
The snaffle is a type of bit. A similar word is stifle, which is a hind leg joint in the horse.
A snaffle is midler. A pellam is a combination of a curb and a snaffle. It has a curb chain and can be very harsh. Of course, a bit is only ever as harsh as the hands that hold the reins.
Yes it is as a D ring bit is always a weaker one.
A Snaffle
Yes.
A smooth snaffle, but it should be noted that even in the smooth snaffle, a bad rider can make it a very painful, severe bit simply because of how sensitive a horse's mouth is.
a snaffle bit would be easiest on your horses mouth a harsher bit is the best way to get a good horse to listen to a bad rider. So be good to your best friend and use a snaffle.