I was speaking generally about shelf cams seeming to tend toward "idle sound" seems to be less of a market for one that sounds close to stock. We got "rattler" and "thumper" i propose a new line "sleeper" ... 
Doesn't "high performance" dictate a lumpy idle?
If we go back aways Isky ground everything on a 108 LSA and kept the intake and exhaust duration the same. Said it gave the best performance. Factory stuff like the 427 SFT cams had a bunch of duration and a 114 or 119 LSA. Now take the CJ. cam. That lobe was used on the 351C CJ, 390GT,428CJ,429CJ and a few others. Amazing how an OEM decided those lobes would work in all those different engines.
As I said you really have to look at value event and really really best is if you can look at the lift profile. You can have two cams with the same LSA and duration, but be a lot different.
I would say that high performance doesn't always dictate a nasty idle sound. You can have an absolute mild cam with a really good cylinder head and still make a lot of power.
It's not just the OEM that makes universal cams, all the cam companies have been doing that for decades. The same cam that's available for an FE is also available for a SBM or a Buick. I'm just thankful that we've made leaps and bounds in technology since the 60's. Unfortunately, a lot of guys still think a single pattern on a 108 is the ticket. Actually, most people focus way too much on the LSA period. It's like it's some magical number or something.
I had a guy email for a custom cam and said, "I don't care how you grind it, as long as it's on a 104 LSA".
Show me that you don't know anything without telling me that you don't know anything.