Macedonia, Estonia, Georgia, Armenia, Azerbaijan, Belarus, Bosnia and herzigovina, Croatia, Czech Republic, Kazhakstan, Kyrgyzstan, Latvia, Lithuania, Montenegro, Moldova, Serbia, Slovakia, Slovenia, Tajikstan, Turkmenistan, Ukraine, Uzbekistan, East Timor
You know, I don't think that's as helpful as you think it is (FTR: I am neutral on Scotland becoming the independent republic of scotland. Or what you'll chose as a name. Maybe the Independent Republican Kingdom of Scotland? Whichever.) This examines the countries you cited.
The following countries are from a 50 year
federation and do not have the same background as Scotland:
Macedonia, Bosnia and Herzegovina, Slovenia, Serbia, Montenegro
Leaves:
Estonia, Georgia, Armenia, Azerbaijan, Belarus, Croatia, Czech Republic, Kazhakstan, Kyrgyzstan, Latvia, Lithuania, Moldova,Slovakia, Tajikstan, Turkmenistan, Ukraine, Uzbekistan, East Timor
Moldova: Has been a country since ~1200's, a vassal state first of the Ottoman Empire. Passing relevance (but hey, can potentially be used. Since it has a similar history to Scotland, this is the first valid example. Side note:
has not been official recognized by any UN member. It's de facto, not de jure.) [ALSO: Is trying to join the Union State. See Belarus]
Estonia: Wasn't formally independent until 1918. Appears to be a passed around territory. Also
was guarenteed independence in 1920. Oops. Don't think is going to help you.
Belarus: Become it's own nation in 1991 (no identity), and .. has joined a Union State with Russia. The
exact opposite of what you want Scotland to do. Would be hesitant to use this as an example.
Georgia: Historically independent until 1800's, forcibly taken over, freed at the fall of the USSR. Relevance:
none. Unless you plan to claim that England forcefully took over the Kingdom of Scotland. Good luck with that argument.
Armenia: Same as Georgia (another USSR Republic)
Croatia: Independent, then joined Hungary, declared Independence in 1918, took over by USSR, declared independence in 1991. This is a /good example/ as it split from the union of Austria-Hungary. Points!
Azerjban: Okay, this might more helpful. Ancient nation, then took over by various empires in the area, then free /briefly/ 1918-1921, free again in 1991 (USSR Republic). Doesn't seem precedent binding to me, but hey.
Czech Republic: Known as Bohemia (...!) not really independent until they declared so when the Austria-Hungarian Empire exploded
You know what? Most of these become independent when the USSR collapsed. Let's see if ANY of these do not fit that example.
We get.. East Timor:
Colony, then made independent in 1975, taken over by Indonesia then a war of independence for 24 years until the UN forced Indonesia (somehow!) to let them go their own way.
.. I don't see much of any hope for precedent except the rule of self determination there.