Every year, Techno System Research, a major marketing research company located in Japan, publishes the worldwide camera market share data. Here are the market share changes compared to 2019. This includes all kind of cameras (compact, DSLR and Mirrorless).
Canon 47.9％ (+2.5%)
Sony 22.1% (+1.9%)
Nikon 13.7% (-4.9%)
Fujifilm 5.6% (+0.9%)
Panasonic 4.4% (-0.3%)
via nikkei