Complex sentence: The initialism LGBT is intended to emphasize a diversity of sexuality and gender identity-based cultures and is sometimes used to refer to anyone who is non-heterosexual or non-cisgender instead of exclusively to people who are lesbian, gay, bisexual, or transgender.
Split into simpler sentences: The initialism LGBT is intended to emphasize a diversity of sexuality and gender identity-based cultures. It may be used to refer to anyone who is non-heterosexual or non-cisgender, instead of exclusively to people who are lesbian, gay, bisexual, or transgender.