Think we've figured those out:
1 Tallest Giga
2 Longest inversion
3 Tallest spinning coaster
4 Fastest spinning coaster
5 Longest spinning coaster
Holding Ryan to account, though: "bigger than" and "longer than" Ka? Seems unlikely but possible on both counts unless something changed since he teased those as recently as February. I'd have to double-check my math but 375' will fall short I think of exceeding Ka, even using the ride length vs track length fudge to get there. I originally calculated a 450' tower and it got the "longer than" record with many feet to spare.