Just scrolled down before posting this and saw that Grodd beat me to it, but I already typed all of this and I’m not wasting it:
Glowy hand = Jericho/Joseph Wilson. Wolfman/Perez era Titan, joined during the Judas Contract.
Superman symbol and hammer = Steel III/Natasha Irons (III because of the Justice League Detroit character, who has nothing to do with the latter two but shares the codename), the better-known Irons’ niece. Must’ve joined… mid-to-late 2000s sometime? I haven’t read any Titans books with her in it.
Terrible fashion sense and speedy: Jesse Quick, second-generation speedster better known for JSA connections. This is actually one of her better costumes. Also gets dumped on a lot for no reason in-universe, which makes me a little protective because she’s actually cool. '99 series.
Black and purple glowy one: Solstice. Joined late 2000s I think. Don’t know anything about her other than generally that she exists.
With cigarette: Terra, obviously. See also: Judas Contract.