tGohan Basic Blockstrings/Mixup
(UPDATED #1.18):

[5L/2L 5M 6M+Assist]
Classic basic overhead blockstring

[5LLL j236M/H+A1 > High/Low Mix]
Auto combo legs mix. Backdash after j236M on block if no assist to reset safely and/or bait mashing/reflect with [j1S V/SD].

[5L/2L 5MM 2H j236M/H+A1 > High/Low Mix]
Alternate variation of the auto combo legs mix. Same concept though.

[5L/2L 2MM 5H (SSS) 236L+A1]
*Ki Blasts optional. Use them to space your 236L for better frames to backdash safely on block if no assist.

[5L/2L 2MM 5H S 2H j236M/H+A1 > High/Low Mix]
Corner only string. Same concept as the auto combo legs mix. Comes in handy sometimes.

[$ 5LLL 66 jM > 5LLL]
Sparking only. True infinite blockstring.

[$ 5LL 66 jM j236M]
Sparking only. This is a cross-up string that's pretty sneaky when paired with the infinite spark string. Condition with the infinite then tag em with the cross-up to mix

[$ 5L/2L 2MM 5H 236L (v) jS 66 jM j236M]
Sparking only.  Empty vanish cross-up string. Beats 2H counters. Really good mix up tool imo.