Now that's official Triangular ID TO&E
US Divisions were rarely that.
Wasn't uncommon for an Infantry Division to have as many Tanks and TDs attached to have more armor than a Panzer Division, and that's not even counting examples like the 83rd ID, nicknamed 'Ragtag Circus' as they pressed every bit of German transport that was running, into service after a liberal coating of OD painti and big, White Stars all over
Everything from Firetrucks to Panther Tanks
Back to WWI.
The US actually not too far off the above chart, but Four Infantry Regiments, with three Artillery Regiments and three Machine Gun Battalions and Mortar Battery, but no Medical Battalion, and more Quartermaster/Supply Battalions