Nature Fang Druid, or Green Scourge-Skinshaper Druid, with the Crocodile Domain... Order of the Blossom is a great fit.
Order of the Blossom also goes well with Sandman Bards and Vanguard Slayers and Carnivalist-Sylvan Trickster UnRogues.
I really like Order of the Dragon for its Aid Allies ability. Arbiter Bards, Inspired-Internal Alchemists, Pack Rager Barbarians, Tribe Spirit Shamans, Succor Mystery Oracles... huge fan of Aid Another.
Order of the Cockatrice for its Braggart ability... goes excellent with Negotiator Bard. Pick up the Mein of Despair Rogue Talent to go with your standard action Dazzling Display, and the Opportunist Advanced Talent to go with Steal Glory.
Magician Bard VMC Cavalier for Order of the Staff is like a one-man Coven, can boost spellcasters like a MF.
Going back to Order of the Blossom, though... the real power is in the SLA's it gives you, not the stupid Sneak Attack. And avoid Order of the Blossom at all costs if you are encountering a lot of Fey... you cannot refuse a request for aid from a Fey or you lose your Order abilities. Any reasonable GM will absolutely put that to the test, I know I would... it is most certainly a trap.
VMC Cavalier goes well on anything that gets a version of Tactician. And any Bard archetype that gives up Inspire Courage, so at least you can contribute teamwork feats.
Order of the Star VCM on a Paladin or Cleric would grant them +50% progression on their Lay on Hands and Channel Energy starting at level 7, which is very powerful. Unfortunately the classes that have access to those abilities aren't exactly swimming in bonus feats.
A pretty weird build would be Dreamthief UnRogue VCM Order of the Blossom. Dreamthief is an archetype that removes all of your sneak attack in return for getting the Emotional Focus abilities of a Phantom. But as an UnRogue you still keep the Debilitating Injury class feature, which means you absolutely want to regain Sneak Attack to trigger it.
At level 8 you'd get +2d6 Sneak Attack from the VMC which can trigger Debilitating Injury and any SA Rogue Talents you pick up. The Hatred Emotional Focus gives you +2 to attack, half your HD to dmg, and +3d6 SA at level 12.
Order of the Hammer gives you a Monk's Unarmed Strike damage for nonlethal damage... could potentially make for a fun Sap Adept/Master build? They also get a free grapple attempt with any full attack against the target of their Challenge. And you get Chokehold as a bonus feat. I could see this potentially being fun on a Bandit-Kidnapper Rogue or UnRogue.