I think it needs to be pointed out that there are very distinct currents of insurrectionary anarchism: Italian, Greek, French, Iberian, Chilean, and North American (PNW) to name the ones I can write a little about.
I won't refer now to insurrectionary anarchism before WWII, although it also had internal differences, as the distance between Galleani and Malatesta can attest.
Italian: influences in the institutionalization of the Italian Left (CP) and spectacularization or vanguardism of the illegal Left. Key texts, The Anarchist Tension by Bonanno and At Daggers Drawn by anon.
Greek: influences in Situationism and history of civil war, the entrance of the Socialist Party into power, and the yearly practice of street fighting. Key texts by Anarchist Archives along with texts/actions by many affinity groups and assemblies.
French: I can point you to the journal A Corps Perdu and refer to waves of attacks particularly in Paris, that seem to have been effectively repressed, but this is only a vague outline to suggest the existence of something besides the IC.
Iberian: The experience of the Juventudes Libertaries splitting from the CNT, the Cordoba bank robbers and their writings, particularly the Italian Claudio Lavazza, or the prisoners involved in the struggle against FIES, such as Xavi Cañadas.
Chilean: Probably the only one to not be anti-Leftist, Chilean IA comes largely from armed ML groups that fought against the dictatorship continuing their struggle under democracy and subsequently mixing with anarchist and squatter circles, also highly informed by political culture of yearly street fighting, similar to Greece.
North American: Quiver distro, Wolfi Landstreicher, Killing King Abacus, a mix of anti-civ anarchism and--unique to IA--perspectives gained from solidarity with indigenous struggles (even in Chile, where there seems to be a major possibility for such contact, there doesn't seem to be much indigenous influence in IA). Fredy Perlman is also a major influence, with his books being widely read again after his death.