What aspect ratios do Pentax users like?

Barry Pearson wrote:

This question was prompted by an article in "Black+White Photography":
Issue 243, page 72 onward.

The author, Eddie Ephraums, discusses the way some photographers concentrate mainly on a single aspect ratio, for example 1:1, 3:2, 2:1, 4:3, 16:9, 7:5, etc.
And may become well-known for it.

He made himself a simple adjustable hand-held viewer so that he could judge scenes without needing to look through a camera viewfinder.
(Using such a viewer is apparently commonplace in cine photography).

Some cameras can be adjusted so that different aspect ratios are seen in the viewfinder.
My K-1-series can be switched between aspect ratios, including 1:1.
My Ricoh GRIII can be set to 3:2 or 1:1.

And, of course, images can be cropped later in Lightroom or Photoshop.
Lightroom has several built in aspect ratios, as well as "Custom".

So back to the title of this thread:
"What aspect ratios do Pentax users like?"

Perhaps with a follow-up question:
"What assistance (if any) would be desirable in cameras?"

________

Some useful articles:

• A thread of my own: "Revisiting SQUARE crop on K-1-series"
• At Wikipedia: Aspect ratio (image)
• How to Know Which Aspect Ratio to Use in Your Photography

In like 6x7 primarily after my Mamiya RB67 but 4x3 approximates to that in digital, so my Panasonic LX100 is mainly left on that ratio or occasionally 1x1. My DSLR is obviously 3x2 and I find that too wide for my taste but as I'm composing in that ratio, I leave it like that and don't alter it later. What I would like but will never get, is a full frame 4x3 camera with the sensor the same width as FF but with a length conforming to 4x3 ratio. I know I could crop an FF EVF camera but I'd still be fretting about the lost pixels.