My SO's company asks for presentations if a candidate for certain high-level positions make it to final rounds of interviewing. It's pitched as being a "high level overview to start a conversation, not a TED talk". They also pay the candidates for the time to put this presentation together. I think it's something like $200, but I am not sure.
Being asked to put together a presentation is not necessarily bad, but being asked to put in your personal time without compensation is a red flag. It speaks a lot to their culture and expectations of personal sacrifice the company likely asks of their employees.
In no particular order:
Plus others, but those are the ones that tend to get played every year.