Thanks for the details. So you have (excuse the expression) "dumb" fans. 
You probably can add smartness to them relatively inexpensively.
First step: At Amazon or at Home Depot or Lowes you can get fan RF/Remote kits that include an RF recevier (gets wired into your fan's upper canopy) and a remote control. Those are very inexpensive.
As long as you have room in your canopy to add the RF receiver and you can do the wiring, you'll have control of the fan via the remote that comes w/the kit.
To add the "smartness" and use it w/Hubitat you get a Bond Bridge (about $100). It's a hub that allows you to control all of your fans from an app on your phone, or from Hubitat using an integration. Basically the Bond Bridge can memorize the RF commands for each of your fans and then send fan commands directly from the Bond Bridge to your fans w/out you having to use your remote or an mobile app.
There is community-built Bond Bridge integration that works very well...info on that here.
I use the a Bond Bridge w/my fans w/the Bond integration and the setup is very reliable and allows me to control my fans just like I could from a full-featured remote - on/off, choose speeds, reverse/forward, etc. You can use Hubitat to set up whatever automations you want to turn the fans on/off, set speeds and direction, etc. I have ones that turn the fan on/off or different speeds based on time, motion, etc. You could also do temperature, contact sensors, anything that Hubitat supports.
What you'd want to make sure of is that the remote kits you use are compatible with your fans, and also w/the Bond Bridge. The vast majority of remotes are compatible w/the Bond Bridge, but I have no experience adding an RF kit to an older fan so can't help there.
If/when you do install the RF units in the fans you'll need to remember to set the dip switches for each RF receiver/paired remote to unique settings so one remote doesn't accidentally control multiple fans.
You might get better help w/the fan upgrade questions in the Bond Bridge forums, but you can also ask in the Bond Integration thread I provided above. Bond Bridge forums are here. Bond support is great - I was having a problem w/my 2 year old Bond Bridge controlling one of my fans, and after extensive troubleshooting they sent me a new bridge.
