Here is a map of an alternate Earth that I've been building and rebuilding for years:
To make things easier on all of us, myself included especially, at the bottom left is a legend on this world's elevation. The differences become most apparent when comparing this map to our map:
Not that the Old World in the alternate Earth is further eastward than ours, and Australia is closer to Antarctica. Presented below is how one of the artists I commissioned interpreted how these geographical differences affected the ocean currents (name is in the map):
And now here is how "SealBoi" imagined how the differences would affect the overall climate:
The legend in the map is as follows:
Red - hot desert, e.g. Sahara
Orange - hot/semi-arid steppe, e.g. Sahel
Light-ish blue (in the tropics) - savannah, e.g. Serengeti
Cyan-ish - tropical monsoon forest, e.g. Western Ghats
Dark blue - tropical rainforest, e.g. Amazon
Yellow-green - humid subtropical, e.g. Florida
Very pale green - humid subtropical, but drier, e.g. Northern India
Darker green (usually near previous) - like previous, but colder, e.g. Hengduan Mountains
Bright, "normal" green - temperate oceanic, e.g. Ireland
Dark green (see Tasmania) - subpolar oceanic, e.g. coastal Iceland
Pink - cold desert, e.g. Gobi
Pale orange - cold steppe, e.g. Great Plains
Bright yellow - Mediterranean, e.g. Greece
Darker yellow - the previous, but colder, e.g. Ethiopian Highlands
Light blue (in the temperate zone) - humid continental, e.g. Poland
Very light blue - that, but warmer - e.g. Iowa
Dark blue-green - subarctic/taiga, e.g. Siberia
Pale-ish purple - continental but drier, high-altitude counterpart to Mediterranean, e.g. Zagros Mountains
Dark purple - subarctic but with dry summers, rare, e.g. Brooks Range
Pale grey - tundra, e.g. Arctic Archipelago
Dark grey - ice cap, e.g. Antarctica
So using the provided information above, I ask you this one question--is the climate map, in any way, accurate?