The phrase "following reasons" is correct and usable in written English. It is used to introduce a list of reasons that support the statement that preceded it. For example: "I can no longer trust John. Following reasons support my decision.".
I will hazard to the following reasons.
And yet I am optimistic, for the following reasons.
This implication holds for the following reasons.
The following reasons may explain this inconsistency.
We have chosen this task for the following reasons.
I like "House Every Weekend" for the following reasons.
However, I'm not a Republican for the following reasons.
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.
Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com