There are several things to make a compound bow friendly for a finger shooter:
1) long axle-to-axle lenth. Anything shorter than 38 inches produces too much finger pinch and less stability;
2) high brace height. Over 7 1/2 inches, preferably near 8 inches. Makes the bow more forgiving;
3) low let-off. Needs to be 75% or less, the string comes off the fingers better and your back tension is better for a good release;
4) an arrow rest that is conducive to finger shooting. I like the whisker biscuit for this purpose.
I have two bows that fill the bill; an older Reflex and a Champion which is no longer made. They both are 38 inches a-to-a, have high brace height, and adjustable let-off set at about 65%. Both shoot close to 300 fps with fingers! These qualities are getting hard to find in bows today. I think Hoyt still makes a 38 which is a very sweet finger bow. Martin, Reflex, and also the PSE Dakota too. The McPherson/Pearson Bishop was a good one but alas I don't think they make that one any more either.
Rev Buck, old finger shooter