For more datapoints on the quant buyside:
First year comp: 350k-625k where decomposition is 150-300k base, 50-200k sign-on bonus, 75-150k guaranteed performance bonus. In my year, IMC/DRW/etc. package was closer to the lower end of this range, with 175k base, 75k sign-on and ~100k anticipated performance bonus, Optiver was marginally higher with lower sign-on but decently higher performance bonus, Citadel/JS/5 Rings was on upper end of spectrum (although we were either returning interns or had competing offers so may have received a slightly beyond standard package).
For comp after first year, the only reliable datapoint I have is my own. Pay is a function of personal performance + pod/firm performance.
In 2nd year: 375-500k with standard personal + pod/firm performance; base does not increase at my shop (and will not increase even if hitting senior leadership), TC is typically less than 1st year as there is no longer a large sign-on component. Can expect comp 0-250k with poor personal + pod/firm performance at my shop as there will be a decent chance of getting let go. Can expect 650k-820k with strong personal + pod/firm performance
In ~5 years: 800k-1.2MM with standard personal + pod/firm performance. 475-625k with poor personal + pod/firm performance. 2-4MM with strong personal + pod/firm performance
In >8 years: Hard to stay because there are probably <10% of the QT/QR in my firm fall under this bracket and there's survivorship bias. I would say 1.6MM-3.8MM with standard personal + pod/firm performance. 900k-1.8MM with poor personal + pod/firm performance. >>8MM with strong personal + pod/firm performance.
Hours across all tenures at my shop range from 55-85+ (everyone here puts in 50+, but there are several extremely dedicated quants that easily put 85+), everything quoted in USD, think there is standardization across all offices such that bonus is the same structure regardless of the cost of living in that region. Another aspect I didn't really appreciate when I was new grad is 1MM+ in 5 years with standard performance does not mean "all I have to do is work here for 5 years and do alright to get decently wealthy", it's more "median person conditioned on the pool of people that survived for 5 years" which is in the grand scheme of things, an exceptional quant. The expectation for what "standard" performance is quite exponential across tenure.