Sol Badguy and Ragna have a lot in common, Tager players may enjoy the easier time with Potemkin.
But let me warn you, the timing is VERY strict. In Blazblue you have a good leeway to buffer in moves. In Guilty Gear you are looking at frame perfect execution. While Blazblue teaches a lot of the basics, you essentially have to "relearn" them in Guilty Gear, as timing and command input are different. There is almost no buffering in Guilty Gear, as opposed to Blazblue when a string of commands fluidly transfers one into another.
You need to relearn your timing essentially.