You do the math..... I'll do the alfredo!! HAHAHAHAHAHAHA!!
The two most seen on American television are Rugby League and Rugby Union.
League is what is usually being played if you watch two clubs from different English/Irish/Welsh/Scottish cities playing each other.
Union is what they play in the world cup or Six Nations competitions.
Union is the original sport and League is derived from that. League is more similar to our football in that there are downs, but if you don't score after (I think it's four) your downs, you have to kick it away to the other team sort of like our punt.
I personally like Union better, but then I like defensive struggles in American football to shootouts, so take that for what it's worth.
Actually, I find most pro games to be about as exciting as watching fishing. In both you see a few idiots who celebrate like they just won the stanley cup every time they do something that's part of their job. I don't find that entertaining at all.