Most of them are really nice. I've never liked trim that doesn't completely wrap around and a number of these jerseys utilize that...but that's generally the strongest negative opinion I have on most of these that aren't just me repackaging my thoughts on the names and logos.
Ottawa's problem is less the jersey and more...everything else about that brand. The gray does help differentiate it from the Flames a bit, which is good, but gray sucks as an accent color and it sucks from a readability standpoint. I've seen a lot worse, but they still need to start over again and retry this within a few years. It's just a crap name and logo with a mediocre jersey.
I will say that I like the Sirens jerseys more than I was expecting to. I don't like the logo and this doesn't change that, but leaning into the 90s aspect of it immediately gives them character/an identity. I don't love it, but I like them more than I expected to. Montreal has the best jersey to go with the best logo. Boston's colors look great on a jersey. Toronto, uh, has nice colors. Minnesota really didn't reinvent the wheel with any aspect of their brand, but they still pulled off a solid look that may well work its way into my collection (if Pittsburgh doesn't get a team soon). More purple in sports, please.