I know that the formula hubs are rebadged as iro and that the biachi pista frame is the same as several other entry-level bikes. So do you know of any other parts that are rebadged as something different?

nashbar cross fork is the same as the winwood, a lot of carbon forks are the same company. I don't think the pista is the same as other bikes, but the khs and such are.

Nashbar Hubs = ?

most Nashbar components are rebadged (or debadged) gear from big name brands and sold at big discounts. My Nashbar flip-flop hub looks identical to one that Soma is selling now, but the hub is probably manufactured by a third company.

Kinesis, and Maxway make the bulk of the worlds frames (as specialized, Giant, Trek, Bianci, Surly, and %90 of other bikes out there) , and there are probably like six or seven parts mfgs that make up an equally huge part of the OEM spec. Formula hubs are definitely one of the bigger bearing/hub mfgs making parts for specialized, bontrager, WTB, Velocity, and a huge list of other companies.
Sugino is actually a big rebadger too. Their RD cranks are rebadged OEM for a lot of different companies.



https://www.hubjub.co.uk/stronglight/stronglight.htm#xd

tektro makes most brakes and levers for the small guys.