Tom Petty has got some great tracks, and does often sing in a nice comfortable range (mainly in verses). Funny that you'd mention Dave Grohl, he's one of the modern rock singers that often sings in a comfortable range for me as well. Of course Dave also sometimes goes very high and distorted (like on the chorus of The Pretender) which is quite the challenge!
As you noticed, I have a 'lower' voice so I struggle with higher range. Over time I've been noticing improvement/increased range in myself however so I'm keeping it at it.