I should have specified the fonts I was referring to were monospace fonts, specifically, which out of the 12 I've got installed on my machine I've got only one is the "truncated 'd'" style, unfortunately.
If you are aware of others, please post links, I'd love to have a few more.
That style is usually called “single story a”. Monaco is a common monospaced typeface that uses it. I suspect that style is less common because at small sizes it's easily confused with o.
If you are aware of others, please post links, I'd love to have a few more.