None of the speakers you’ve listed are limited to S1.  No need to swap anything, you could be running S2 today.  Also, there is only one generation of the Play:1.  

https://support.sonos.com/s/article/4786?language=en_US

These products work with either the Sonos S2 app or the Sonos S1 Controller app.

Amp

Beam

Boost

Connect (Gen 2)

Connect:Amp (Gen 2)

Move

One (Gen 1)

One (Gen 2)

Play:1

Play:3

Play:5 (Gen 2)

Playbar

Playbase

Port

Sub (Gen 1)

Sub (Gen 2)

Symfonisk

Thank you.  I forgot to mention the bridge that I also have.  I notice this isn’t compatible with s2 Ap.  Do I still need this or will my components work without it using the s2 Ap?

The BRIDGE is indeed limited to S1. You could conceivably replace it with a newer BOOST, which runs either S1 or S2, but not both at the same time, or you could just wire any of your Sonos speakers (but not a surround speaker or a Subwoofer) and have the same effect as having the BOOST. 

Do you mean wire a speaker into the router.  But not the Beam?  

Could I wire in a play 1.  Then switch to no bridge and move to S2 Ap?

Or you could eliminate the Bridge altogether by switching to a wireless setup.

Switch Sonos between a wireless and wired setup

The Beam is a speaker, you could certainly wire that if desired.