"types of chocolate" is a correct phrase that can be used in written English.
For example, "Have you seen the variety of types of chocolate that the store carries?".
A bit like some types of chocolate.
It is one of more than a dozen Haven Bars made with different types of chocolate.
There are some 26 Knipschildt types of chocolate, each bearing a woman's name.
Instead, there were piles of onions, rows of rubber gloves and six types of chocolate cereal (Coco Pops – of course).
This [Larsson] study suggests that eating a moderate amount of other types of chocolate could also be beneficial in men.
We made three types of chocolate; a white chocolate "Rolo" with a cornflake-infused cream ganache, and a "Nutella" praline made with hazelnut chocolate.
Historically, there have only been three other types of chocolates in existence, according to the company: dark, milk and white.
Melt all the 3 types of chocolates separately using a double boiler.
DW: What is your favourite type of chocolate?
The reason for this lies in the type of chocolate you use.
"I get, like, some type of chocolate flavor, depending on the price".
