Zenith and Solex ... although Fomoco did their own version with sealed jets (for cost reasons) This was on Mk1 and Mk2 crossflows (1100, 1300 and a larger one on the 1600) Ford also used a twin-choke (of their own on the sporty variants) and this was best swapped for the 'jettable' 28/36DCD which I fitted on my Mk2 1600 before I 'went' 1760cc Oselli Rally spec.
Rally boys, and top end power stuff for Mk1 and 2 Xflow and also the pre-crossflow involved using twin Weber 40DCOE's.
1760cc over-bore rally spec used twin 45DCOE (but wouldn't tick over below about 1500rpm because of camshaft/fuel combination made it super-lumpy)