I would define a "blue collar" government as that headed by Clement Attlee in 1945.
That Labour party administration brought forward to Britain the NHS, the nationalisation of the Railways and other utility companies, a huge council house building program and much else.
That government contained figures such as Ernest Bevin as a senior minister, who never received any real education and worked as a Docker prior to entering the trades union movement and then politics.
Truly Britains greatest peacetime government in my humble opinion, which contained many people with real experience of blue-collar life.