According to George Street & Karim van Overmeire "Dutch Troops of the French Revolutionary War and Napoleonic Wars 1793-1810" – below is paraphrased:
On 4 July 1806 King Louis issued an order for both N
Bataljon Garde-Grenadiers and Bataljon Garde-Lichte Infantrie be expanded to full 3 battalion regiments and become Regiment Gardegrenadiers and Regiment Lichte Infanterie van de Garde
At the the same time the Regiment Garde te Paard (Horse Grenadiers) including the hussar company was renamed Regiment Garde Cavalrie and expanded to 5 squadrons (1st & 5th Hussars – remainder grenadiers).
Also wanted the guard artillery expanded to include existing 1st Garde-Artillerie te Voet (foot artillery) along with a new 2nd horse artillery company – but never reached fruition.
17 September 1806 the 2 hussar squadrons were removed from the Regiment Garde Cavalrie and organised into 2 squadron Regiment Gardehuzaren.
Regiment Lichte Infanterie van de Garde renamed Regiment Gardejagers.
1st company of each battalion became known as Keurcompagnie – the men considered equivalent of line NCOs and were called Karabiniers in the Gardejagers.
Regiment Gardegrenadiers were considered as the 1e Regiment Infanterie and the Gardejagers as the 1e Regiment Jagers, the Grenadiers te Paard as 1e Regiment Cavalrie and Gardehuuzaren as 1e Regiment Huzaren.
23 November 1806 Garde-artillerie te Voet ordered to become a horse artillery company! 2nd and 3rd companies to be formed but only ever existed on paper.
1 March 1807 Regiment Garde Cavalrie reorganised into 2 squadron Regiment of Kurassiers and renamed Kurassiers van de Garde. Regiment Gardehuzaren expanded into 3 squadrons.
7 October 1807 Regiment Gardejager became 3e Bataljon of Regiment Gardegrenadiers and Regiment renamed Regiment Inafanterie der Garde
5 December 1807 Regiment Gardehuzaren renamed Garde te Paard – 1st squadron hussars and other 2 kurassiers. Regiment Infanterie der Garde renamed Regiment Grenadiers van der Garde.
3 August 1808 Regiment Garde te Paard reorganised into 3 kurassier squadrons and became 1e Regiment Kurassiers.
18 September 1808 3e bataljon of Regiment Grenadiers van der Garde no longer called Jagers and to wear same unform as remainder of the regiment.
29 April 1809 3e Regiment Huzaren admitted to the guard for service in Spain as Huzaren der Garde van den Konig.
25 September 1e Regiment Kurassiers expanded to 4 squadrons – extra squadromn were Hussars and the elite of the regiment. 12 October 1809 regiment renamed Regiment Garde te Paard with al 4 squadrons as hussars
16 June 1810 Huzaren der Garde van den Konig renamed 2e Afdeeling van het Regiment Garde te Paard (2nd Division of the Horse Guards Regiment).