General:
* Contain
* Embrace
* Encompass
* Feature
* Incorporate
* Comprise
* Consists of
* Hold
* Have
* Possess
More specific:
* Emphasize: Highlight, stress, focus on
* Add: Append, attach, supplement
* Consider: Take into account, factor in, account for
* Mention: Refer to, cite, allude to
Less formal:
* Throw in
* Put in
* Add in
* Pack in
The best synonym will depend on the specific sentence you are using.
For example:
* Formal: "The report includes data from all three surveys."
* Informal: "The cake recipe contains flour, sugar, and eggs."
* Emphasis: "The presentation highlighted the company's new product."
Think about what nuance you want to convey and choose the synonym that best fits the context.