Curious if you could compare/contrast the interview methods between the different companies. Were any of them more challenging? Did they all expect perfect wo

Curious if you could compare/contrast the interview methods between the different companies. Were any of them more challenging? Did they all expect perfect working optimal code and/or make you run test cases, or was it more like "ok you more or less have the right algorithm" or something in between? How fast do you generally solve various LC questions on your own? Thanks in advance, appreciate sharing your experience.