I have not tasted any of those myself, so take my advice with a grain of salt.
Nyomi's Delicious:
Here is the description from England's Orchard (you probably have seen this already) - "Original trees grown in Berea, Kentucky and is a local favorite of the neighborhood. Light yellow fruit with no after taste. Very heavy producer of 10 to 12 oz. pawpaw fruit that are 4 to 6 inches long. Hangs in cluster of 4's and 5's."
A friend and pawpaw connoisseur said it was "good." So, if you have room and like to have less-common varieties, i would consider it.
Wells:
I have not heard of Wells Delight. That's probably a mix-up. There is further confusion because supposedly there are 2 "Wells" clones in circulation. Either way, from what I have heard generally this is not a desirable variety. I have seen one cluster of Wells and the fruits were tiny. Of course, that could have been a fluke. Sheri Crabtree at Kentucky State specifically advised me against planting it.
Wilson:
At the 4th International Pawpaw Conference in 2016, Wilson variety was the constant butt of jokes. Neal Peterson particularly was adamantly against this variety and couldn't understand why anyone was propagating it! That's all i know about it.