Regarding the variables, I use the ISY994 custom integration add-on in HACS. HA Core version is 0.105. Here is the setup for the first four ISY variables in my config file:
isy994:
host: xxx
username: yyy
password: !secret zzz
ignore_string: Auto DR
isy_variables:
sensors:
- id: 1 # Work Holiday
type: 2
icon: mdi:home
- id: 5 # Curio Cabinet
type: 2
icon: mdi:track-light
- id: 8 # Workshop Power
type: 2
icon: mdi:power-socket-us
- id: 11 # Fall Decor
type: 2
icon: mdi:halloween
There are additional variables setup in the config file. All are working. They show up as sensors under Developer Tools --> States.