The sprint medley is rather uncommon, run most frequently at non-championship track meets which are focused on relays.
Usual conduct for safety is to run the shorter events first, in lanes to allow faster moving sprinters to exchange without interference.
And faster moving athletes will have a more consistent tempo to prepare a handoff than with longer sprinters who are more prone to decelerate inconsistently as they finish their leg.
At a higher level of athlete, this would put handoffs for short sprinting legs into theoretical common passing zones unless the track is specifically marked with the 4 turn stagger required to run a 4 × 200 meters relay entirely in lanes.
Short sprinters moving around in a common passing zone at the last moment is a potentially chaotic situation.
So these descriptions use a standard 2 turn stagger, causing the athletes to break to the inside following the exchange at the end of the first lap.
On an indoor 200 meter track, this would be conducted in exactly the same fashion as an outdoor 4x400, with the runners breaking to the inside following the first lap, except the athletes would be allowed to use the acceleration zone.