In the meantime, I decided to peruse the Internet and see what other time travel movies are among the most popular ever made.
I visited several sites. Some have a top ten list. Others are a very detailed, including this one, that had 180 movies in their list.
Based on the research and ones I have seen personally, here is my list in alphabetical order. I did not include more than one in a series, such as Terminator or Star Trek, in order to include a greater variety. Otherwise, flicks like the Back to the Future series would have taken up too many places. Honorable mention goes out to "Time Bandits" and Hot Tub Time Machine."