I can certainly think of some that are vastly better than the AFL-CIO establishmentarian unions. What about the IWW? The Coalition of Immokalee Workers?
For the record, some IWW locals make use of post-Wagner labor laws (most commonly in efforts to combat retaliatory firing of organizers for unionizing activities). I think that sucks, but the union as a whole is pretty minimally involved, and — importantly, unlike the AFL-CIO and Change to Win [sic] unions — they are largely opposed to State-mediated collective bargaining, and to the whole State regulatory apparatus, and they do have an organizing model which doesn’t depend on the use of federal labor bureaucracy.
The CIW is another can of worms. As far as I know they have never made any use whatsoever of any federal union law at all. If for no other reason than the fact that they couldn’t use it even if they wanted to. The Wagner Act explicitly excluded farmworkers’ unions (also domestic workers’ unions — the point was originally for St. Franklin to be able to count on the support of white-supremacy-forever Southern Democrats, so jobs black people took under Jim Crow weren’t included), and none of the post-Wagner amendments have changed that. Block and Huebert’s blanket assertion that all actually-existing unions either practice vigilante violence or solicit state violence or both is either breathtakingly ignorant or else dishonest. They seem to have no idea at all that several large unions have no access at all to the NLRB under existing federal labor laws, whether they want it or not.
(To be fair, I must note that the largest farmworkers’ union, the UFW, has no access to the federal NLRB, but does have access to a state government agency — the California ALRB, created in the 1970s through their lobbying efforts — in California, their main base of operations. I think this helps explains, actually, why the UFW, which was one of the most dynamic organizations in the labor movement for many years, has accomplished relatively little since the 1970s: they were bought off by the political patronage, and meanwhile the board was captured within a couple years by the big produce bosses, just like every other regulatory board in the history of the world. But as far as I know the CIW has access to nothing of the kind in Florida. Neither does FLOC in most of the states where it operates — mainly in the Southeast U.S., if I recall correctly. What they get done, they get done in spite of, or because of, the fact that they receive neither the legal benefits nor the regulatory burdens of the NLRB regime. And I think that’s a lot of the reason why farmworkers’ unions have accomplished so goddamned much in the past 40 years, while the establishmentarian labor movement has largely stagnated or collapsed.)