*This is for a project I'm working on with a friend, and somewhat to satisfy my curiosity.
Some different breastplate types, for reference.

Amerigo 5-Point

Passier Auriga 5-Point

Dyon 5-Point

Typical 5-Point

Mons 3-Point (attaches to billets, not dees).

3-Point (minus wither bridge).

3-Point (with wither bridge).

2-Point (dee attachment).

2-Point (billet attachment).