As far as l can gather, there are there are many ways to say "from here on,..." or "After this..." or etc, but actually what expressions are more commonly used in everyday English?
Hereinafter/hereafter:
e.g. Elizabeth Gaskell's novel "Ruth" will hereafter be cited within the text as EG.
from now on/as from now:
e.g. From now on the gates will be locked at midnight
Henceforth:
e.g. Henceforth, said building shall be the property of Brendan Duggan.
...
If there are some other common expressions (that I didn't mention), please tell me.
And also If you mentioned two expressions like X and Y, please specify that: In written/spoken English, people often prefer to use X rather than Y.