Was looking more into ledge trumping earlier with Ridley, and aside from ledge snapping with Wing Blitz down to trump them or spike them when they lose intangibility, trumping with the other Wing Blitz angles from off stage, holding forward during other 2 frames followed by trumping, or during Akuma Jumping, as well as the general tactics shown in the GimR videos like run off, down, and back toward ledge (while close to the ledge but not too close), walk off and down instead of running off followed by grabbing ledge, doing it as a roll out of shield with back against the ledge followed by the move off inputs, or the run skid method by running (10 frames for Ridley which is roughly equal to a roll distance) and releasing control stick followed immediately by moving off, down, and pressing back towards ledge like you normally would (the latter two methods of which help with the collision box shenanigans)...
Other leadup attacks into ledge trump for Ridley, like here when they lose intangibility, would be like run off, hold down, up air, then jump to grab the ledge, as well as run off and bair. Run off nair could maybe cover something that uair can't.
For specials, run off SPR would be too reactable but is an option, as well as run off & jump B-reverse single fireball, or if you really want to get spicy, run off and jump turnaround skewer.
Ridley’s could add ledge trumps to their edgeguarding game more, is all I’m saying. Mainly go for when opponent is patient at ledge and doesn't fall for ledgetraps, or if their up B has no hitbox.
For bait options, there’s run off, airdodge, ledge grab, then punish with any attack of choice. Also parrying one’s recovery and then going for a ledge trump as a punish, or just bait a ledge trump by running towards ledge, then back away and prepare an on stage punish right when they decide to getup. (Unrelated to trumping, but likewise you can push or jump forward and then dash or jump back and d/f-tilt (up angle f-tilt for punishing shorthops or recovering near ledge from above and can down angle f-tilt instead if they're near ledge and knocked off below), d/f-smash, side B/down B, dash attack, instant or dash pivot grab (flickshot/holdshot included), retreating autocancel nair/fadeback fair or pivot bair against safe aerial approaches as they land, shield if you anticipate their dash attack and punish accordingly, or up throw (tomahawk jump forward and fastfall into grab if you choose) or up tilt > fullhop/IDJ tomahawk jump up & fastfall to bait jumps/airdodge and catch their landing with an attack or fall and jump again with delayed aerial. Can use uair to bait an airdodge too and punish after, or run off stage and uair if they’re recovering high. There's also wavedash (from ground) > f-smash which can bait and punish a number of things)
* The up throw frame trap is mainly to be used for those that have difficulty landing to begin with, or a character that can't safely make it to ledge after jumping away.
For edgeguarding while hanging at ledge after you ledge trump, there's nair + bair at around mid %, mainly on big bodies. To do the inputs for this, press back and jump + A > jump again and back + A, and up B to get back to ledge afterward. Can also do a uair after a trump like to catch those that jump afterward. Then for doing just bair at high %, can either jump away from ledge quick and bair (can gimp even if they’re not yet at kill % for it), or ledge jump after the trump to hit bair on someone up higher. Even if you don’t land a bair in time too, the opponent will lose intangibility when they regrab the ledge which you can then punish with a smash attack or something.
You can also do specials as an edgeguard after trumping. i.e. for plasma, drop ledge and jump and B-reverse. As such, you can similarly ledge release and jump and turnaround skewer and reverse side B.
Oh, this bit is a more general part of ledge trumping. Isn’t new but very good to know, a thread explaining how ledge trump advantage works; the sooner you grab ledge after the opponent, the more frame advantage you get.
There's also just dropping down and ledge snapping, like for ledge trumping but with a different goal; the idea being to use ledge invincibility to just not care about anti edgeguards or reversals, while also setting up for a double jump bair or nair. Pretty effective against tether recovery characters.