Support _row_ headings for StructuredList

[ThinkOpenly]

Summary

I would like to have row headings for a StructuredList.

Justification

I seek formatting akin to a dictionary, where there is a meaningful term on the left, and an elaboration for the term on the right:

unneeded	column headings
Purpose	elaborate on purpose here
Result	elaborate on result... this is a long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long, long
Associations	list of associations...

Note that GitHub Markdown displays the row heading centered, above.

When I try to use the head attribute for the first StructuredListCell of a StructuredListRow the text formatting is applied, but the alignment of the field drops to the bottom, which looks awkward:

Desired UX and success metrics

I seek a visibly distinct row heading which is even with the top line of the other cells in the row, or centered, or, ideally, a simple way to select which behavior is desired.

"Must have" functionality

Row headings, bold by default, centered or top aligned.

Specific timeline issues / requests

Nothing specific. 2021?

Available extra resources

n/a