Calling all the expert authorities on this forum. I'd like to ask for your thoughts on two questions.
1. What do you think the ratio x-height/ascender is, in the lowercase of this Scotch Roman type? It's from nonfiction work set in early 1920s Germany. A wonderfully calm presence on the page; very pleasant to read in. I'm really curious.
2. Among the modern, digital Scotch Romans, which one do you think comes closest to this look/structure? I'd be really grateful for your recommendations.
I'm attaching two screen caps and two PDF samples, for edification. Thank you in advance!

Comments
My point in the reply was more prosaic: I don't know how to go about getting numbers like you did: 11.5 pixels, 17 pixels, etc. That's the part I wish I knew how to do myself. If I did, I could just go on and measure a lot of x-heights in that sample, then average them; and do the same for ascender heights, and so on. It's getting the number of pixels that eludes me.
Brunel, from Commercial Classics, might give the same feel as the first sample—especially Brunel Short No 2
For everyone's delight, I'm posting another sample of great type for science writing. It precedes the German one above by almost a century. It's from a 1847 survey of arithmetical books post-Gutenberg by Augustus de Morgan, the famed logician. Behold the beauty. I''m thinking I should start a thread on this theme.