Swansea have played 4-3-3 most times although 4-2-2-2 has been successful.
I would guess that playing top of the table opponent, who favour a similar possession passing game, they would go for one up front to gain more midfield control then try to catch us on the break.
If we were to go two up front, one would need to cover the midfield in the (likely) event we lose possession; I would go 4-2-3-1 initially to gain control of the field and bring attackers into play once control is gained.
Whether we play Rhodes in that way, I'm not so sure. I would go for Leitner in that roving role but what do I know?