The past years witnessed a significant adoption of LGBTQ+ ontologies and structured vocabularies in libraries. Some of them are published as Linked Data in the Semantic Web. Homosaurus is among the most popular ones with links from/to the QLIT, GSSO, Wikidata, LCSH, etc. Over the past years, three versions of Homosaurus have been released with updates every half a year. Despite its rapid development, little has been reported about the properties of these links. In this study, we first retrieve all the mappings and links between them as well as links about concept replacement to form an integrated knowledge graph, together with some obtained links about redirection. Using them, we perform qualitative and quantitative analysis. We discuss the discovery of missing links using weakly connected components. Among 105 newly discovered links from QLIT to LCSH, experts confirmed that 78 (72.38%) could be included. We analyze concept drift and change by providing examples of the convergence and divergence of concepts. Moreover, we study the reuse of multilingual labels. Our program discovered 775 labels in Swedish in Wikidata (524 prefLabels and 251 altLabels) for 524 entities for QLIT. Finally, we discuss potential issues with publishing related multilingual information in the semantic web and the consequences of our findings in practice in libraries, heritages, and online literature databases. The project is available on GitHub at: https://github.com/Multilingual-LGBTQIA-Vocabularies/Examing_LGBTQ_Concepts.