Systematic reviews work best for specific research questions. They need a team of at least two people for independent scoring of results. SRs often take 1 1/2 years or more.
Other types of evidence projects include:
Here is a discussion of the differences among kinds of reviews:
Grant, M. J. and Booth, A. (2009), A typology of reviews: an analysis of 14 review types and associated methodologies. Health Information & Libraries Journal, 26: 91-108. doi:10.1111/j.1471-1842.2009.00848.x
Scoping review (ScR) characteristics
Scoping reviews require fewer person-hours than SRs, and are well-suited to broader questions. Cochrane and PROSPERO do not include scoping reviews. OSF publishes scoping review protocols. Many journals publish ScRs.