I keep remembering ones to add to the list:
Recommended Books (third post)
"Commentary on the Holy Bible", by Matthew Poole (3 vol.) is one of those sources that have been very helpful at different times. If I remember correctly, while Poole was somewhat indebted to Matthew Henry he determined, while making his commentary, to touch lightly over passages that he felt Henry had sufficiently covered and to fill in spaces where he sensed that his predecessor did not give the given text sufficient coverage. So these two commentaries augment each other.
Ironically, one thing that both Matthews had in common was that both died before they were able to finish their work. Matthew Henry managed to finish the Old Testament and the Gospels and Acts, but the other NT books were covered - with varying degrees of success - by other hands. Possible the best replacement writer, at least in my opinion, was William Tong (Hebrews and Revelation).