i need this too/ so i did some experiments/ for me works this setup tilemap anchor point to 1 1
and grid scale 1.4+
no mathematiks just putting numbers and watching how it looks in editor/ you can change them
and sorting for tiles so they dont overlap/ maybe chunk mode instead of individual will be good too
upd. i understood 0.707 node scale as in that topic Unity 2108.3 Isometric Tilemaps (SOLVED) 0.707* 2 =1.414 tile scale as here. so you choose yourself what to scale