I played mainly cody and yun in iv and i definately have some universal skills that carry over. First of all is general hitconfirming, with cody i confirm of single medium and heavy attacks, i also often look for counterhits to maximize damage.
I learned to play the neutral regardless of my shitty walkspeed. It was less about raw whiff punishment and more gathering data about their button usage and timing which allowed me to counterpoke a lot more effectively.
Frametrapping and conditioning, especially with cody as he has no other ways of opening people.up really. Using tight and big frametraps, setting up the counterhits, and then throw for days.
Another general thing is to properly space my jumps, jumping from distances which will make people hesitate to AA, especially against normal anti airs. Jumps like cody his j.hk and cammy her j.hk made it really easy to do but it works well with most characters.
I REALLY learned how to properly AA while playing yun with uppercuts. Getting thise last second uppercut anti airs out and even autocorrect. I also have a st.lp habit with cody against badly spaced crossups, which works well too in sfv. In general i didnt let people get away with jumps or even crossups. I hate people jumping.
Im pretty good during scrambles, sneaking some quick mixup in while opponent is flustered. Saw it transfered when i played necalli, doing some quick command grabs and frametraps, and cammy using hooligan and ex dive during these.
The distance at which you play neutral in SFV feels closer than in USFIV, and whiff punishing wuth medium attacks is a lot more difficlt, i was thrown off to be honest.
I n beginningn i got blown up for crouchteching, quickly stopped that.
Normally i use a LOT of buttons to apply pressure, in sfv pushback us a lot so i had to find a bit different ways to ext3bd pressure by mixing in more dashes, still trying to get get used to it. Will take a few weeks i guess.
Game felt sluggish in beginning due to moves having more inbetween frames and longer hitfreezes, however the overal flow and pacing is faster than USFIV. The fast dashes help too.