I use Mystik JT-6 Hi-Temp with Moly. It is very good grease, I use it on my boat trailer and enclosed snowmobile trailer also and have had zero issues. I do recommend using the same grease each time you repack bearings. Different grease may not be compatible. If you replace the bearings and races you can switch grease brands at that time. Just my opinion.
Scott & Julie
2017 Sunset Trail 250RB
2015 F150 Supercrew w/3.5L EcoBoost/Max tow, w/
157” wheel base.