Most of the LTL carriers have, more or less, the same fuel surcharge. The truckload market is different and there does not appear to be many published rates, but they range from 15% to 30% based on miles traveled. You will typically get a better rate because you’re buying the whole truck. Some LTL carriers have a sliding scale as well.
If it were so much cheaper to use truckload carriers as brass mentions we’d be seeing the opposite of what’s going. LTL carriers would be in the position of a lot of truckload carriers now, especially the smaller ones that don’t have the pricing power, bankrupt.
https://www.estes-express.com/resources/fees-and-surcharges/fuel-surcharge
Estes fuel surcharge as of 7-19 ranges from 28.3 to 33.6%
https://www.fedex.com/en-us/shipping/fuel-surcharge.html
FXF fuel surcharge as of 7-19 is 30.8%
https://yrc.com/fuel-surcharge-us/
YRC fuel surcharge as of 7-7 is 30.9%
https://www.odfl.com/us/en/resources/fuel-surcharge.html
OD fuel surcharge as of 7-7 ranges from 12.72 to 41.32%
https://www.tforcefreight.com/ltl/apps/FuelSurcharge
TForce fuel surcharge as of 7-19 is 30.8%