Chapman conquered F1, F2, F3, Junior, FF for a bit, Indianapolis, small engine sports cars (i.e. up to circa 2.5 litres), the Tasman series and of course contributed to the iconic Lotus-Cortina. There will be other things I haven't mentioned as well.
But 'big' engined sports cars eluded him. The Lotus 30/40 (I will refrain from the normal quoting of R.Ginther - if indeed it was him) wasn't even attractive so arguably had nothing really going for it.