HC is close to no name at all, and I don't mean calling them The No Names. It says we couldn't think of a name.
I've seen worse than a hairy extinct elephant. Doesn't suggest speed and skill though.
Mammoth singular suggests big team, big deal, not necessarily made up of big players. Mammoths plural does suggest big players.
Since they couldn't have Yeti (I'll never understand the threat of confusion with a cooler manufacturer) and Wasatch just confused everybody, why not Sasquatch? People have heard of it and it is the NA version of Yeti, which is Asian.
Out of those 3, I would take Outlaws. Agree the logo is not much.