Working from memory after testing, so if I make a mistake somewhere, I’m sorry.
f+MP is more unsafe than f+HK. f+HK is probably like -1, f+MP is like -3.
Jab Uppercut and Jab Low Kick are -1 or so, punishable by Julia super but not SRK.
Hyakujitsuko is neutral or better. So it might be ideal to end the chain of strings in that, or just cancel at some point to :hcb::k:, which is also neutral or better.
The chain [MP - LP] - [MP - LK] - [MK - d+MP] xx hcb+K has no gaps.
f+MK is unsafe to jabs, as is the punch followup. But the punch followup pushes you back, so you might be safe in some cases.
b+MP by itself is unsafe. But the MK followup is positive on block, and there is no gap.
Sacred Blade (d+MK ender for b+MP and f+MK) is neutral or better on block, and is special cancelable. But there is a gap where you can be reversaled (not jabbed) before it hits.
Leg Cutter is weird. The first hit is -1 or so and not cancelable into specials. The second hit is neutral or better, and is cancelable. The 3rd hit is unsafe to Flash Kick iirc, but it’s cancelable, so cancel it into hcb+K. There is no gap between the 3 hits and the special move at the end if you do them with no delay.
Demon Slayer is very unsafe.
Dragon Wheel Kick (f+LK) is probably around -4 on block. When used at an appropriate distance it will be safe against most characters. You could cancel it into Leg Cutter to make it completely safe but there is a gap where you can be jabbed.
Standing roundhouse can be weird sometimes. At point blank, it whiffs a crouching Julia, but if she is crouch-BLOCKING, she will block it. Meanwhile it whiffs on Guile even if he is blocking.