According to ICV/2 the Spring 2020 top non-collectable miniatures sales were:
1
Warhammer 40K
Games Workshop
2
Age of Sigmar
Games Workshop
3
D&D Nolzur's Marvelous Minis
WizKids
4
Star Wars Legion
Fantasy Flight Games
5
Pathfinder Deep Cuts
WizKids
By comparison, Spring 2019 was:
1
Warhammer 40K
Games Workshop
2
Age of Sigmar
Games Workshop
3
D&D Nolzur's Marvelous Minis
WizKids
4
Star Wars X-Wing
Fantasy Flight Games
5
Star Wars Legion
Fantasy Flight Games