Admittedly, I hadn't looked recently, but that values does seem flipped around from how I remember it (then again, tier 1 was probably always a lot more minimal than tier 2).
FreeBSD has an additional 14 platforms in tier 2 or 3 support (counting FreeBSD 13; 8 platforms counting only FreeBSD 14), OpenBSD has no non-tier1 platforms, and NetBSD has too many to count, but it's notable that most of them are updated to the current release.
For comparison, FreeBSD has just two tier 1 platforms: https://www.freebsd.org/platforms/
OpenBSD has 14, as you mentioned: https://www.openbsd.org/plat.html
NetBSD, I count 9: https://wiki.netbsd.org/ports/
FreeBSD has an additional 14 platforms in tier 2 or 3 support (counting FreeBSD 13; 8 platforms counting only FreeBSD 14), OpenBSD has no non-tier1 platforms, and NetBSD has too many to count, but it's notable that most of them are updated to the current release.