Going straight from detached single-family homes to high-rise condos skips over a vast array of possibilities in between - duplexes, quads, cottage courtyards,

Going straight from detached single-family homes to high-rise condos skips over a vast array of possibilities in between - duplexes, quads, cottage courtyards, townhouses, even the ubiquitous 4+1 with commercial space at ground level and living space above. I don't know about Strong Towns specifically, but AFAICT the modern urban-planning community is often critical of both extremes.