I wonder if you’ve been through FAANG interviews in the last 8 years. It sounds like you haven’t.
I’ve not found other companies interviews to be particularly good either. Non-leetcode interviews get biased a lot towards personality, resume, and ability to BS.
But since any exercise you choose is going to be flawed in some way, to me it's about getting as much diversity of signal in the time you're willing to spend per candidate. For smaller orgs, 3 hours of interviews is a reasonable cap, and I find I just don't get enough signal from leetcode exercises relative to the time they generally take (in my experience as a candidate, it's been 1-2 45 minute exercises).
I’ve not found other companies interviews to be particularly good either. Non-leetcode interviews get biased a lot towards personality, resume, and ability to BS.