One frequently recurring theme, that seems like the backbone of this aspect, is a relationship to traditional institutions and orthodoxies; but it appears in two seemingly opposed ways, one of embracing and embodying such institutions, and one of standing opposed to them in different ways.
The first is easy to spot, especially among famous people: Jupiter-Saturn, themed to politics and business finance, marks a wide circle of politicians and business financiers. They literally embody "the system" - the system is made up of them and those like them.
Against this are those who are politically conscious, including writers and other artists whose politically-themed works have often been critics and gadflies of their era's rulers or government systems. I no longer think of them as per se the foes of the status quo, so much as the champions of a better system. (Was Galileo a radical? If so, it was his Aquarius-Aries, not his Jupiter-Saturn conjunction. His actions were radical, but he only wanted the truth.)
One can fall back to saying such things as "politics and finance are major themes in their lives," and then figure out how that theme actualizes by other means; but I now think that doing so misses fundamental themes and principles. I'm looking for the essence from which all of the aspect's diverse traits arise. (I have a lot more basic stuff than I'm reviewing in this present post, but I'm trying to focus on these specific themes.)
The likely years of birth of Buddha, Jesus, and Muhammed were all years of Jupiter-Saturn conjunctions. While today they are all embodiments of tradition and orthodoxy, they were radical thought-leaders of their times. The same is true of Freud, who today seems a tired old institution: But that's part of what I'm seeing, he actually became the foundation of a new orthodoxy. Among the famous, I find many in science and other fields whose revolutionary thought became the foundation of new orthodoxy. Major music figures tend to be iconic, not just popular, nearly social cornerstones (John Lennon, Lady Gaga, Placido Domingo, Joan Baez, in diverse ways).
This shows best in the famous examples. It is more difficult to see in day-to-day people. I am starting to see that they tend to be cornerstones of their families and communities. I used to agree with Carter and Lewi that they lack imagination, but I now think they merely favor what is proven (which can look like the same thing): One can hardly say that this collection of revolutionary scientists and musicians, and the likes of Gene Roddenberry, Walt Disney, and Kenneth Anger lack imagination!
A spin-off: Increasingly, I see an ancestor worship or family tradition motif with this aspect, including many who continue a family legacy or have fame not readily separate from that of a parent or child; or artists who carry a dynastic or cultural heritage as part of their mark. As a simple example, it is easy to find major actors with the aspect who are part of a family legacy, with either a parent or a child in the lineage (e.g., Candice Bergen, Geena Davis, Martin Sheen... recently actor Meghan Markle took on family allegiance to one of the grandest "old institutions" on the planet... Woody Allen "brings all his formative family with him in everything he does"... Mel Gibson has been an active continuator and institutional support of his father's church... and so on.)
Ebertin mentions none of this. Traits he does mention are often more day-to-day expressions, especially the positive traits, and I probably have to rely more on them (after further vetting).
I could write a dozen pages on Jupiter-Saturn aspects, in fact, taking several other themes and spreading them out this way, but what I really need to do is fit everything important in three to five lines!

I can't call them conservative any longer - there are many who are politically and socially conservative and preservative of old orthodoxies, and also many who are the foes of these and even the forerunners of new orthodoxies. Those with average and below-average income are hardly "pillars of our society," though they are often cornerstones of their families and smaller communities. The exact way the typical person with this aspect relates to finance depends on so many other factors it is hard to pin down, though I know many diverse ways they do it.
That's one problem with this aspect: Jupiter and Saturn have some things in common, but in many ways they are so opposed that the exact outcome is from a "balancing act" of swinging between opposites. I think (though I could be wrong... still working on it) that for most of them Jupiter aspecting Saturn promises reward from hard work, and Saturn aspecting Jupiter slows and grounds one's ambition - the final result (except in the dysfunctional) usually being a balanced, economical approach to life.
But maybe not. I'm still digging.
What say ye all?