Exhaust Fan showing 3 speeds when it only has 1

I bought some Inovelli Zigbee Smart Fan Switches, and when I add them to Home Assistant, the entities are wrong:

My lights are separate from the fans, and the fans show 3 speeds, but for my exhaust fans, there’s only 1 speed:

I have the Zigbee switch from Inovelli correctly set up with “On/Off” mode for my bathroom exhaust fans, but it still shows this 3-speed configuration.

Is there a way to make it so these on-off exhaust fans don’t show 3 possible speeds in Home Assistant?