An artillery trooper was never and never will be hot. And despite people thinking it's cool to see, I would imagine Axe Woves wouldn't exactly be a hot seller.
Mace Windu might not be relevant but I'm going to guess his figure would probably sell better than many (not all) Mandalorian figures. Certainly not Mando, Ahsoka and maybe Bo-Katan, but there are plenty of characters like Windu, Padme, Fives, Veers that would sell like hot cakes. Especially with how much people want stuff outside of Mando.
But Mando is hot, it's making big money and Hot Toys is just following the dollars and pumping as much as they can into it.