Paul Revere has about a dozen top 20 songs so not sure they fit on this list. And not sure what @bicketybam was thinking but every song on that Boston album was a hit.
Yes, of course, more for the cheesy nostalgia. I think Half Breed by Cher was around the same time. I did say 1-3, I thought it was more like in the 5-6 range not 20. Boston is a headscratcher indeed. I think either the singer or the guitarist killed themselves.
Just double checked, they had 10 top 10 hits and another 5 top 20. Now I'm not saying I think the songs were any good but i guess some people did. Brad Delp did kill himself but long after their heyday, he killed himself in 2007 and there was only one more album in 2013 but don't know if they had even 1 original member at the time. Edit: Boston's 1st album, which Foreplay/Long Time was on, sold over 17 million copies and was one of the best selling debut albums of all time.