Switzerland has the strongest currency in the world due to the country's reputation for governmental and financial stability. This makes Swiss labor extremely expensive for reasons mostly outside of their control, and the Swiss government has tried (and largely failed) to remedy this. Technically, this is devaluation but given the circumstances and Switzerland's relatively small footprint in the labor market, it's understandable and fairly benign.

The Fed cutting interest rates in 2009 had the effect of weakening the USD relative to what it would have been. But the intent of the policy was not to steal a share of the export market, but rather to provide stimulus during a deep recession.

Japan has been in ultra-low growth and ultra-low inflation for decades. To fend off the threat of deflation and economic contraction, it ran the printing press and cut interest rates. Which, again, devalue the currency but stealing export share is not a major intent.

I'm not sure what the appropriate definition of "currency manipulator" should be but, while China's currency policy history is a strange and variable beast, yesterday's devaluation was clearly a different case than those above. And depending on how far you want to go back in history, there's an argument that the intent of some previous Chinese devaluations were aimed primarily at increasing its relative attractiveness as an exporter.

Its most recent history until yesterday was to prop up the RMB, so it may be fair to argue that now is a strange time to label them a currency manipulator. Given yesterday's events and their history in this area though, it's hard to make the claim that their currency policy is altogether ordinary either.