Go to street cam from the 70s-80s.

Agree with YR on Jones
IMHO Dad Dick Jones developed then brother Rick ran the shop, he's now moved on to "controlled induction" (check it out) now Mike runs the camgrinding shop

Agree on the copy catIR not working as well (although Engle may be Dad's grinds, they were tight- just speculation here)
GM and the Chevy indy project spent huge amounts on R&D

I really question the small base circle with a slight IR (limited by the big grinder wheel)
can't possibly work as well as the real thing

My favorite oldie but goodie cam was the one Isky developed for our "Max Wedge"
for a long time it was the ONLY .904 grind Isky listed- can't remember the number 1012B ?
Later Racer Brown came outwith a similar grind that reved a little better but the Isky was more consistent- we used it to dial in chassis for a long time

On the Hyd side Jones .904 Hyd grind- the bottom one on his Hyd master list is flat out the best for what it does very very short actually on the seat say at .002 yet big at .250-.275 and with a broad not pointy nose,, it closes easily - very asymetrical