Morton sugar cure and tenderquick are essentially the same product exception being that sugar cure contains a small amount of dextrose to feed the beneficial bacteria in long cures and a small packet of spices better known as California ham cure on Waltonsinc.com.

The reason that Morton doesn’t recommend tenderquick in bacon anymore is that the high heat of frying underutilized cure #2 nitrates causes nitrosamines to be produced and that is not very good for colon health.

For long cures, non-cooked meats, and boiled meat tenderquick works well though it is extremely salty. Unfortunately you cannot lower the saltiness because then you don’t get enough cure.

For fried meats use only cure#1 and leave cure#2/ tenderquick for long cures and recipes such as Gepockelte. I agree with Austin that using the Excalibur cures may be a better option for most because the salt content of tenderquick is extremely high (intentionally) and has very specific uses that most people will never need.

Commercially, nitrate is no longer allowed for use in curing of smoked and cooked meats, non-smoked and cooked meats, or sausages (US FDA 1999). However, nitrate is still allowed in small amounts in the making of dry cured uncooked products. Home food preservers should avoid the direct use of this chemical and opt for the mixtures described above.
https://nchfp.uga.edu/publications/nchfp/lit_rev/cure_smoke_cure.html

Look on the cure page here for the “MRT” cures:
https://www.waltonsinc.com/seasonings/cures