Ok, I made a first list for Natural Wonders too, it's just coordinate in the actual Giant map, I let you convert it into code
Some have 3 or 4(!) tiles range, so it can be tricky to place them
Cliffs of Dover: 2 tiles > (11,71) (12,71), it seem too big for that map size, if possible, reduce it to one tile or suppress it
Crater lake: (131,65)
Dead Sea: (38,51) (38, 52)
Galapagos: (144,35)
Great Barrier: it's actually 2 tiles in Civ VI (101,23) (101,22)
Kilimanjaro: (31,27)
Mount Everest: Not sure for this one (65,54) or (65,56) or else?
Pantanal: 4 tiles (159,26) (159,27) (160,26) (159, 25)
Piopiotahi: 3 tiles (108,4) (107,3) (108,3)
Torres del Paine: (154,7) (155,6)
Tsingy de Bemaraha: (36,18)
Yosemite: (132,62) (132,61)
Like civ, some NW are very close