Two-Four Tuesday (v.2)

Last week's "Top Five" list of the leading recording artists generated 5 comments. Thank you, visitors!

If aloma210 and Daniel Rubin had just gotten together, they could have had the correct combination of Elvis Presley and Garth Brooks as the #2 and #4 musicians in terms of cumulative U.S. album sales. Did you know that Garth Brooks gained a big boost in his measured popularity when Billboard magazine switched its way of measuring record sales in 1991? That's right -- prior to that date, the magazine relied on manually-completed reports submitted by a convenience sample of record store managers. After 1991, Billboard began to install automated bar-code reader software in many more stores. The system tracked each and every sale of a record, rather than relying on a manager to report sales. When the store managers' mistakes and biases were taken out of the equation, Brooks saw his estimated sales figures (and Billboard ranking) jump dramatically.

And now, on to today's game. We hope you'll play along again!

I will post the "Top Five" items in a list, except that I'm leaving out the 2nd and the 4th items. Your mission -- comment with your guesses (or "answers", if you're that confident) as to what the missing items are. Don't cheat by looking up the info on the web -- just have fun and take your own guess. I'll give the correct answers the following Tuesday.

Top Five pet names given to male cats, according to the Veterinary Pet Insurance Company.

1. Max
2. ?? (hint: it's an animal)
3. Oliver
4. ???? (hint: it's a physical phenomenon)
5. Sam