Studies by the Canadian government have shown that most, something like 95% of drying happens from the ends once the wood is cut to length.
Splitting does not add that much to the drying. Some of course. A green tree in a 10 foot length will be green a year later except for perhaps a bit on either end.
I would not wait with birch. That will rot quickly and should be cut and split soon. Red oak takes a long time to dry, two years once cut but will not rot in tree form for many years.
Green wood is much easier to cut and split. White ash has the least amount of moisture when cut fresh and will sit in log form a couple years. A bit harder on a chain than other wood.
That study on wood drying is available on line through the Canadian government website.