Bingo, I must have seen this while researching the LM1084. Digikey PDF for the LM76002 on page 43:
https://www.digikey.ca/en/htmldatash.../1/lm76003rnpt

TI recommends using a four-layer board with the copper thickness, for the four layers, starting from the top one, 2 oz / 1 oz / 1 oz / 2 oz.