Frankie is the second best Hollingsworth sibling. She and Winston were cute, but she and Jonah have definite "Degrassi" supercouple potential. Beyond that, and beyond her body image issues, we don't know much about her just yet.
Goldi is a super cool, no-nonsense feminist, which is awesome. But beyond that we don't really know her yet.
Grace is OK. Her friendships with Maya and (formerly) Zoe are cute, and the reveal of her cystic fibrosis was really sad. She's got that inexplicable crush on Zig though, which docks her more than a few points.
Emma’s mom was a character in her own right on the earlier pre-“TNG” series, but she never amounted to much in the later series. Aside from being Emma’s mother and Snake’s wife, we never learned anything interesting about her, beyond that she owned a vibrator for like a minute before Clare and Alli creepily stole it.
This dude has seen some shit. In his many, many years at Degrassi (both in the original series and the “TNG” reboot), he’s been privy to school shootings, teen pregnancy scares, sexual assault admissions, and (most horrifyingly; thanks, Darcy) sexual assault accusations. He’s definitely not as good of a principal as Hatzilakos, but he’s mostly a cool dude, despite the fact that he cheated on Spike with Hatzilakos that one time.
I admittedly have a soft spot for Jay, despite his indirectly getting Jimmy shot. He was a big ol' cheater at first, cheating on Alex with both Emma and that random chick Amy. But the unintentional hilarity of Emma confronting Jay with "You gave me a social disease!" cannot possibly be overstated, and Jay's relationship with Manny was amazing and transformative for both of them.
Mike Dallas (aka "Dallas")
The boy was fine as heck. His storyline in the aftermath of Cam’s suicide was amazing and heartbreaking, and his relationship with Alli ended up being surprisingly great.
Zoe hasn’t been around as long as characters like Bianca, Holly J, and Paige, but I sense that we’re going to get a similar complex and well-developed character arc from her. I adored the way the show handled the aftermath of her rape and her eventual coming out storyline. It was also an interesting choice to not completely redeem her — she’s still kind of a horrorshow in Season 15, when she hooks up with Zig to “punish” Grace for not loving her back, it’s a bit bonkers. She’s not all good or all bad. She’s complicated and, so far, one of the most intriguing characters the show has had. More please!