Any kick above the knee level can be caught. IMO, the safe kick that's hard to catch are:
- front kick at knee.
- side kick at knee.
- side kick behind (or on the side) the knee.
- reverse side kick at knee.
- roundhouse kick below the knee.
- foot sweep at the ankle.
The only concern is all those kicks can be escaped by just bending the leg at the knee joint.
Fumikomi. No knee bend will escape it.