Here are some of the most popular brands of mirrorless cameras:
Canon - Canon entered the mirrorless market a bit later than some of their competitors, but their EOS R series has been well-received by photographers. They offer both full-frame and APS-C models.
Nikon - Nikon's Z series of mirrorless cameras has also gained popularity among photographers, with options for both full-frame and APS-C sensors.
Sony - Sony has been a leader in the mirrorless camera market, with a wide range of models to choose from. Their Alpha series is particularly popular, with options for both professionals and enthusiasts.
Fujifilm - Fujifilm is known for their retro-inspired designs and high-quality lenses. Their X series of mirrorless cameras has gained a following among street photographers and documentary photographers.
Panasonic - Panasonic's Lumix G series of mirrorless cameras has been well-regarded for their video capabilities, with many models offering 4K video and high-speed frame rates.
Olympus - Olympus has a long history of producing high-quality cameras, and their OM-D series of mirrorless cameras has been well-received by enthusiasts and professionals alike.
There are also many other brands that offer mirrorless cameras, including Leica, Sigma, and Pentax, among others.