Looking at PBP stats +/- is interesting.
Last year, the only non-Tatum lineups with any substantial minutes (greater than 35) that were plus were lineups with Brown and White (Brown, White, Williams, Horford, Smart = +24 in 71 minutes and Brown, Brogdon, White, Williams III, Williams = +13 in 39 minutes).
This year, Brown, White, Hauser, Horford, Porzingis = +25 in 66 minutes and Brown, White, Hauser, Holiday, Porzingis is +23 in 28 minutes.
We know pretty much any Tatum lineup is going to be good but the Cs ability to put Brown, White, and KP on the floor at the same time really makes a difference.