An easy corner relaunch loop on jam is something like this:
5H>j.2k>(wait a bit)>j.k>land 5HS> j.2k>(wait a little less)>j.k>land 2S> j.k>j.2k>jump cancel asap> j.s>j.d
this isn't optimal damage output, but its relatively easy and is still does quite a bit. This works on a lot of characters as well, just don't use it on super lights, and the pauses between hits vary by weight class.