I find this to be a great block string vs a cornered opponent:
2ax2, 5b, 6b, 5c, 22a xx 2c, 5a (whiff)...
-66, repeat
-696 j.C, j.B, repeat.
This is a basic blockstring, and you can switch out certain parts for the usual mind games such as tick throws and staggered attacks. One thing you can do it throw in a 2c before the 5c, then wait until the last few frames of 2c before hitting 5c, it might hit your opponent which they are trying to punish you for the blocked 2c.
That's a pretty good string. Thinking about it, my guess is that your opponent could probably jump out of your pressure after the end of the string, so you probably don't want to use that if you want to keep the heat on your opponent. If you want to keep the pressure on, don't do 2C after 22A. Do a dash-in or IAD. But yeah, adjust your chains depending upon what you want to accomplish.
-A simple shield will end this with pain for you. Try throw in some tick throws sometimes and mix up the attacks so you aren't so readable.
Besides a shield or EX shield killing your 22A frame trap (taking about 5B 6B x 22A, a timely reversal that has invincibility like Sion's 214C, will blow right through 22A, and the same with shield bunker cancels being done after blocking 22A. 22A is shield bunker cancel bait if your opponent is good at bunker cancels, so definitely look out for that and mixup your pressure chains. You can use simple A stagger chains and short reverse beat combos like 5B 6B 5A/2A to protect yourself against bunker happy cancel players.
I also found (at least I didn't know about it before) a fuzzy guard that you can use again tall characters (ie: Nero/Walachia).
-iad (or jump in) j.b, jc. c (push c as soon as you can and hit the opponent with b as late as possible without hitting the ground)
Pretty much you can go either way, fuzzy guard them to be hit with a j.c into j.b into mega 6k damage combo. Their isn't enough time to react to it, so it's a 50/50 guessing game. However, even if they guess right, they really can't punish you for doing this, you just continue your pressure. Maybe this is useful in the block string I just posted? Haven't tried yet...and I'm going to sleep...
If you do the fuzzy guard, do jCB instead of jBC. At least if opponent is crouching you'll hit them cuz there's some characters you'll tend to whiff jB a lot against. And also another point, if you time jC right, it has lots of hitstun. So with it, you can actually do that land and do 2A, and your opponent will still be stuck in blockstun the entire time, so you can setup the usual mixups even if you don't do the fuzzy guard. Use that to mixup your fuzzy guard.
Besides that fuzzy guard example you posted, you can do jA to mess up with your opponents head. With jA, you can actually block high and low, so you can mess up your opponent with low/highs with jAC, high/lows with jA 2A, or jA into tick throw, etc.