It sort of depends on the bubble you live in. In the US, things might be very different, but in rest of the world, Samsung isn't the only known Android phone manufacturer.
This. Samsung always was only one of many options here in central europe. Never appeared to be the “main choice“ either, except from people who look for the cheapest phone replacemt with their carrier and end up with a galaxy light product
Xiaomi is a well-known and rising (now the #3). Huawei was the a big player but losing ground. Oppo is well known: https://gs.statcounter.com/vendor-market-share/mobile