You have ruled out the ever significant Oak Wilt. There are various insects and other fungal issues that oaks are susceptible to, of which you should see signs. Leaves with holes, dark spots, etc. A vascular wilt can cause dieback. This can be tentatively identified by taking a small dead limb, pealing back the bark and seeing if the cambium has dark streaks.
Oaks are also sensitive to root disturbance.
These trees appear to be entrapped on two sides by roadways. Trees can take a very long time to express root damage and many times this is through tip dieback. The smaller tree which came back may have been impacted less.
When was the road put in, was there any resurfacing done? Same questions with the driveway. Sprinkler systems, gas lines, anything...
Go back in your mind, think years, and start enumerating what has gone on in the life of these trees, especially that is different from your neighbor's healthy trees.
Note on weed and feed products: trees are broadleafed species and many trees are susceptible to the herbicides used in this common lawn maintenance product.
Sylvia