Pretty much anywhere that sells grease will have EP (Extreme Pressure) moly (additive) grease, i.e. autozone, tractor supply. Everyone has their preference and what they think is best, but better to have cheap grease than no grease at all. On my B7510 I have used Valvoline Grease (labeled as being approved for Ford, is EP rated and contains moly) and some Mystik JT-6 (????) that is EP rated and contains moly. I think all/most of the EP rated grease I have seen with moly added has been gray in color.
In an EP (extreme pressure) grease, the soap suspension is stiff to keep the grease from extruding away under load. "Moly" grease contains molybdenum disulfide (MoS2) which forms little spheroids - like tiny ball bearings - so real moly grease is very slippery. High MoS2 content is more effective than the EP suspensions - but makes for an expensive grease. Genuine Molykote (now a Dow Corning product) is around $20 for a small tube. So its more common to find regular EP greases with a small amount of MoS2 added so they can call them "Moly".