Above-mentioned and Last mentioned

Above-mentioned adjective - Mentioned or named earlier in the same text.

Last mentioned and above-mentioned are semantically related. In some cases you can replace phrase "Last mentioned" with "Above-mentioned", this phrases are similar.

Last mentioned adjective - The one most recently mentioned.

Above-mentioned and last mentioned are semantically related. Sometimes you can use "Above-mentioned" instead an adjective phrase "Last mentioned".