Here's one way to look at MED issues though geography by date of issue.
The United Kingdom occupied Eritrea starting in Feb. 1941 completely occupied by May 19, 1941, then occupied Italian Somaliland at the same time. Per notes in Stanley Gibbons MEF issues were first used on March 2,1942.
E.A.F. overprint was issued in Somalia on Jan. 15, 1943 replacing MEF issues. So SG catalog M1-10 & Scott 1-9 & all postage dues could be considered MED - Eritrea-Somalia, take note that according to Scott 5-9 were issued in '43, SG does not date them other then March 2, 1942, so if Scott is correct were they issued before or after Jan. 15?
In modern Libya the British authorities established the Tripolitania district Oct. 1942 but Sirte was not occupied until Dec. 25 & Tripoli on Jan. 23, 1943. Cyrenaica would exchange hands between Allies & Axis four times before British control was confirmed by Nov. 20,1942 fall of Benghazi.
According to SG MEF issues for Tripolitania & Cyrenaica in 1943 it is likely the Jan. 1, 1943, SG M1-9 & Scott 10-4,would have issued for all 4 regions.
That leaves the 1947 issue SG M20-1 & Scott 14-5. British forces reoccupied the Dodecanese Islands by May 7, 1945 until Sept. 15, 1947. The EAF issues usage ended in Eritrea in 1946. The BMA issues for Somalia, Tripolitania & Eritrea started in 1948. So then MEF for these two issues would have been issued for use in all regions Eritrea, Somalia, Tripolitania, Cyrenaica & the Dodecanese Islands.
So if you have not falling to sleep reading this, you may now!
