I don't have any problem with your efforts to find mutually acceptable definitions of the terms. However if you choose to define progressives as seeking to provide more rights for more people, you should also deal with the observable fact that most of these efforts so far by self-styled progressives have in fact been dedicated towards giving more publicly funded entitlements to more people (as opposed to rights). These entitlements, besides vastly increasing the public debt, have, at the same time, significantly reduced the freedom of most people to govern their own lives as they may wish and restricted their freedom to exercise previously acknowleded rights to do as they chose in seeking health care and increasingly exercising their previously acknowledged rights to free expression and association.
The key point here is that most so called progressive policies themselves proscribe various "right behaviors" and thereby reduce the free action of people and restrict their rights. This irony should not go unacknowledged.
In the unlamented 20th century various adherants of Marxist social/political theories also campaigned for added "rights" for the so called working class and designated themselves as the "vanguard" of that class - those who (alone) knew what's good for everyone else. They ended up creating a collection of wretched authoritarian socialist states that produced only tyranny and poverty for all. Along they way they found they needed to deal with those who didn't agree with their program, In Lenin's case this became what he called "the elimination of the irreconcilables" a program that ended up involving mass exterminations and deportations to the Gulag. After wasting the lives of a generation of Russians the sustem they created collapsed of its own internal contradictions and the dull, oppressive tyranny they had created. Their Eastern European satellites couldn't wait to throw off their chains when the whole system collapsed. So much for that branch of progressive politics and the new rights they gave their slaves.
There are, of course other much more moderate versions of all this, and the largely sclerotic economies of the EU are the prime examples. Except for Germany I wouldn't bet a lot on their futures either.