So I’m not too far off from being able to do Diagram 2…. My HP1810-24G switch has a web GUI which I can assign ports to vlans (no command line required) so that’s easy to do.
Diagram 2 would be my design of choice preference also as its it has inbuilt scalability and just more logical etc.
However – how do i assign WIFI to a VLAN? as the router is doing the WIFI, I don’t have a AP plugged into a port on the switch doing the WIFI would be easy if wired by it’s WIFI.
If you look closely, Diagram 1 routers are named ‘wifi router’, Diagram 2 router is just called ‘router 1’ (no wifi) 
My thoughts were that ‘switch limitations permitting’ you could enable say port 24 to use VLAN 1 or 2 for example etc. and then plug in a wifi device (if needed) into that port (ethernet) and then automatically all data going via the wifi device through that port should be suitable for the assigned VLAN ID no.
Don’t take the design to literally, as some mods maybe needed to suit the kit you have or may need to get, and skillset.
.’. Had a quick look at your particular HP Switch and hopefully the below helps ?
https://support.hpe.com/hpesc/public/docDisplay?docId=emr_na-c02596180
In a completely sane world, madness is the only freedom (J.G.Ballard).
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