My knowledge on the Germanic history is very much France-centric: however, the more I have read about it, the more I realized French Historiography focuses a lot more on the events in the region that would become France, and pretty much gives up on Eastern Francia after the Treaty of Verdun.
However, this leaves me with the feeling of an uncomplete history, without giving me the proper context to understand the rise of the Pippinids or the Ottonians, as well as the formation of their political system.
Do you have any recommendation on the History of the Germanic peoples and polities from Late Antiquity to the Ottonians?
Even for the Merovingian period, the historiographic focus will often be on the relation of German peoples with Francia for the good reason most of the available information come from Frankish sources (which, unsurprisingly, reflect first-most their own interests).
There's still enough documentation, including from Italian (Ostrogothic and Lombardic) or Byzantine sources, but as well archaeological that regional studies can be made. Most of recent works would be either in German or in English rather than French.
Malcom Todd; The Early Germans; Blackwell; 1992-2004 Is a bit scattered between ancient, late ancient, early medieval periods as well as the various peoples, but gives a general outlook of Germania's peoples on archaeological grounds.
Janine Fries-Knoblach, Heiko Steuer, John Hines; The Baiuvarii and Thuringi: An Ethnographic Perspective; Boydell & Brewer; 2014
Herbert Schutz; The Carolingians in Central Europe, Their History, Arts and Architecture: A Cultural History of Central Europe, 750-900; ; Cultures, Beliefs and Traditions: Medieval and Early Modern - Brill; 2003
Ingrid Rembold; Conquest and Christianisation : Saxony and the Carolingian World 772-888*; Cambridge University Press; 2018
Ian Wood (ed.): Franks and Alamanni in the Merovingian Period: An Ethnographic Perspective; Boydell & Brewer; 2003
Carl I. Hammer: From Ducatus to Regnum : ruling Bavaria under the Merovingians and Early Carolingians*; ; Collection Haut Moyen- Âge - Brepols; 2007
I. H. Garipzanov, P. Geary, P. Urbanczyk (eds.); Franks, Northmen, and Slavs - Identities and State Formation in Early Medieval Europe; Brepolis; 2008
Herbert Schutz; The Germanic Realms in Pre-Carolingian Central Europe, 400–750;American University Studies, Series IX: History, Vol. 196. New York: Peter Lang, 2000.
I don't think it'd be wholly accurate to think French historiography as being blind to Frankish Germania after 843 (although the focus is often given to western Francia) : textbooks and books generally gives room to the Carolingian "peripheries" as La France avant la France (481-888) (Geneviève Bührer-Thierry, Charles Mériaux ; Histoire de France; Belin; 2010) or L'Europe Carolingienne 714-888 (Geneviève Bührer-Thierry; Armand Colin, Cursus; 2008)
You'd also have some more specific studies, even if less so than in non-French secondary sources.
C.R. Bruhl; *Naissance de deux peuples : Français et Allemands (Xè-XIè siècles); Fayard; 1995
D.G. Dooghr; Les Saxons, des origines au Xè siècle; MCD; 2000
Eventually, as a side note, the rise of Peppinids can mostly be explained outside Frankish Germania : more can be said about it but these earlier (u/y_sengaku) answers (u/Libertat) could interests you.
(Overview Work)
(More Specific/ Biography etc.)
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[Costambeys, Innes & MacLean 2011] is the standard work for the Carolingian Franks, but it unfortunately primarily covered down to 888 when the Carolingian dynasty (by direct male line) was extinct in West Francia. The classic, [Reuter 1991] is still excellent to grasp the broad picture of Germany in post-Carolingian and Ottonian period, though it is not so cost-performance wise.
In German historiography, Gerd Althoff (together with Hagen Keller) has dominated the scene of research trend for long, and he also authors Die Ottonen (3rd rev. ed., 2012), the standard introduction of the Ottonians in German. While [Althoff 2004] is not exactly the introduction of the post-Carolingian period itself, it nevertheless tell us some basic historiographical concepts/ frameworks on how medieval German society ("without state/ institution") in the Early Middle Ages that German historians have paid much attention since the last decades of the 20th century.
Manchester UP publishes several important historical writings from early medieval Germany, and [Warner trans. 2001] is an essential primary text for the study of Ottonian Germany, with excellent bibliography.
As for Saxony, I also listed some relevant recent Anglophone books in: (SASQ) Can someone please recommend me good books/podcasts/articles in English that cover in detail the history of the Saxon and other tribes that occupied territories along the northern border of the Elbe during the Dark Ages?
AFAIK We unfortunately don't have good book on King Henry the Fowler as well as local history of 10th century Germany, but Timothy Reuter (ed.), The New Cambridge Medieval History, iii: c. 900-1024, Cambridge: Cambridge UP, 2000, includes some good introductory chapters on post-Carolingian political history in English (I suppose arguably the best volume of whole series).