What are the differences between a scoping, literature or mapping review?
The three issues you raised are familiar to me either as practitioner, researcher or educator in Africa (including Kenya).
"Scoping" is standard practice in [Strategic] Environmental Impact assessments (SEA/EIA). You may have a look at my two pertinent publications on ResearchGate whether this may help you in your field of expertise as well. In short, scoping includes literature review, but goes beyond it. Especially by identifying the relevant unknows that are not covered in the literature. This requires a wider level of expertise than literature review.
"Literature review" is part of all research, from design, project proposal to publication. In technical reports and MSc theses an explicit section on literature reviews may be included. But this is unusual in papers published in journals. There are also specific review papers in most journals.
"Map reviews", in the sense of critically reviewing one map or a set of related maps, is rather rare compared with the above categories. You may enjoy a look at our recent paper on comparing vegetation/landscape maps of Namibia and a much older paper exploring the issue on a global and conceptual level.
Your research on Covid, HIV and Malaria is very thorough and relevant. Therefore, I am willing to share my unpublished "field" experiences on all three with your institution.