But yeah none of the new additions really convince me, and certainly also not Glamour Bard.
Some of them aren't bad.
Swashbuckler is by far the best pure Rogue subclass (Provided you're not one of those "Pure Rogue is complete and total garbage" types because you ONLY use Hasted Tavern Brawler builds). Bonus initiative, free sneak attacks (Without needing to worry about Advantage or having someone stand next to the target) and free bonus action Disarms and Blinds with no resource cost (Which when used also give Advantage on your next attack)
Giant Barb is really good (Unless you play on Honour Mode, where it got nerfed into the ground) because in non-Honour Mode difficulties the bonus elemental damage takes on every damage bonus the attack would get (I.e. Strength damage, Rage bonus damage, Tavern Brawler, Ring of Flinging, Gloves of Uninhibited Kuchigo etc) making it essentially double your damage but as elemental damage (So you can abuse Wet by opting for Lightning/Cold damage)
Stars Druid, Hexblade and Arcane Archer are okay. Nothing stand out amazing but decent options that provide some small benefits (Stars having weaponized bonus action from forms and essentially Bardic Inspiration/Cutting Words, Hexblade is Warlock with free Medium Armour proficiency, Arcane Archer is Fighter but with bonus special arrows to utilize)
The rest though... Have a difficult time trying to justify themselves over existing subclasses...
Glamour Bard compared to Lore Bard favours Lore which gets its Cutting Words and extra Magical Secrets
Death Domain compared to Light or Tempest Domain... Oh boy I can Cantrip against 2 targets (But don't even get Potent Spellcasting). Or I can get OP spells and abilities from Light and Tempest.
Drunken Master compared to Open Hand. I mean, anything compared to Open Hand is going to struggle. But it's even worse here because it's like "I can spend Ki to make someone Drunk and then spend more Ki to do a single attack that gets 1d8 + WIS bonus to remove it" meanwhile Open Hand is sitting there with every unarmed attack just dealing a bonus 1d4 + WIS damage and spends its Ki just double punching everything to death with this insane damage rider.
Crown compared to Vengeance. "Taunting" enemies doesn't really work and Vengeance Paladin has the most powerful Oath ability with its 10 turns of Advantage (Especially with the implementation that means applying it to yourself means you get Advantage against everything for the duration)
Swarmkeeper compared to Gloom or Hunter. Swarmkeeper is kind of like a slightly better Beast Master as it's basically the same thing but you're not gimped by the awful Companion stats on higher difficulties... But compared to the Gloomssassin or Colossus Slayer + Arrow of Many Targets shenans it's whatever.
Shadow Magic compared to Draconic... Sure the doggo scales with difficulty for some reason. But it's like, I could mess around with trying to get it to apply its curse and then capitalize on it... Or just play Draconic Fire/Ice/Lightning and explode everything with bonus damage.
Bladesinger compared to Abjuration or Divination... Like, sure, for a pure Wizard Gish, Bladesinger comes out ahead. But the ease of doing a 1 level Fighter dip and getting access to all weapons, shields and Medium/Heavy Armour (And being able to use them. Bladesinger is stuck using only its single weapon type and Light/No Armour and no shield) just makes for better Gish builds.