Caveats about noise, contextual value rather than necessarily pure player goodness etc would have to prefix any conclusions ... Also there isn't one definitive RAPM, others knowing more than me can dive deeper if you/they desire.
https://sites.google.com/site/rapmstats/97-14-rapm-2https://sites.google.com/site/rapmstats/97-14-rapmThe above covers most of Kobe's prime and all of Kobe's useful years. It covers his same generation guys (Duncan, Garnett, Nowitzki) and adjacent with substantial crossover guys (Shaq, LeBron). I believe it to be reliable (but am open to being wrong on this).
If you were to heavily buy into it (this version of RAPM) as your sole or primary (with a substantial weight) player evaluation tool, then personally I think it would kill the idea of Kobe top 5
all time (and substantially hurt top 10 all time), placing, as it does, Kobe outside the top 5 (6th, below the guys mentioned above) in value added above average
in this span, and rate wise significantly lower (so for instance if you think Stockton kept up or increased his impact in earlier years, his career would come out ahead). You can eke him ahead of Shaq (within that span, note that this is ignoring Shaq's first 3 years, Kobe's last two, not necessarily a fair swap) in value above replacement (people may differ on the value being "above replacement"). The above idea doesn't lock him out of top 5 in era, but I say,
if heavily weighted it would be very tricky to get him top 5 all time (and as I say hard for top 10 as, with these numbers as your baseline, it might be bullish to see him as even with Nowitzki, or put another way there are a lot of good players with the bulk or entirity of their career outside this window).
People's interpretations may differ, few will put that level of stock into one number and people's criteria for GOAT listings differ (longevity of quality/championship probability added versus peak; playoff weighting; interpreting eras; level of play versus narrative significance and ring; trust in accolades as a measure of level of play etc). Other calculations of RAPM may look different. (I wouldn't know what to do with it, but fwiw, his raw playoff on-off numbers are better than RS and you'd think the impact family in general is kinder in the playoffs - though this version of playoff RAPM - can't speak to reputational accuracy - isn't too bullish
https://docs.google.com/spreadsheets/d/e/2PACX-1vQdG8Zv84zqKEzETDjd8KPsClcw9bPETX9v_x_KEAxjv9NrFaWikOoiSaciy1jbMiygg2D-V8DUQn0O/pubhtml?gid=112475182&single=truecf: viewtopic.php?f=64&p=76043070,
https://www.reddit.com/r/nba/comments/db5hpt/19982019_playoffs_rapm_1_lebron_james_1_draymond/)
RAPM offers little on LeBron versus Jordan as RAPM only exists for the last 2 years of the second 3-peat and Wizards Jordan.
That's a pretty superficial, surface level take. I imagine others who understand it all better could tell you more.