Imbuing Horseback w/ Strength

I've made a datapack for my server a while ago to do something pretty simple. Just give someone Strength for riding a Horse to imitate the power of Cavalry and make them more appealing to use. My basic line for the datapack is just this: execute as @a at @s if entity @e[type=minecraft:horse, name="Cavalry", distance=..0.1] run effect give @s minecraft:strength 1 2 true It works fine however it requires people to nametag the horse. Taking off the name function simply makes it do nothing. I was hoping there was a way to just make this work without the need of a nametag.