I would assume the hghest scoring combos would involve the first jump as an Axel or a Lutz. The second jump would have to be a Loop jump for a 2 jump highest awarded combo.

Has anyone seen a 3A x 3R? or a 3Z x 3R?, and was there good flow out of the 2nd jump?

The 3 Jump Combo requires a half loop jump after the first, followed by a Flip and a Loop jumps.

Has anyone seen a 3A (3Z) x half loop x complete 3R? and was there good flow out of the third jump?

The 3 Jump Combo can also require a half loop jump after the second jump, followed by a 3 Sal. (Note: after the first jump there is either a 3T or a 3R}

Has anyone seen a 3A (3Z) x a 3T or a 3R x half loop x 3Sal? and was there good flow out of it.

I have seen mostly 3Ts in combos and the last jump of a combo, in some cases, does not flow at all. I think there are more points to gain in this area when looking at high scoring combos.