Rachel might me a good choice as Venussail stated above. There are basically two different types of defensive play in fighting games. One is projectile heavy not letting your opponent get anywhere near you and one is not pressing anything and waiting for the right moment to attack. Based off the characters that you have described (Remy and Ash) you seem more like the former than the latter. You can definitely play Ragna and Jin defensively but you would have to have some pretty good spacing. Noel can't really be played defensively to my knowledge. I would look into character such as Rachel, V-13 and Mu-12. All three of those characters gameplan is to throw out their projectiles (V-13's D moves aren't projectiles but you know what I'm saying hopefully lol) and waiting for the opponent to be in the right position to start your offense.
