Having worked on several Bell (Jr.) courses (remodels, studies and re-builds), I can attest that his "style" was somewhat predictible and formula-driven. But, his routings were solid and — when given a good site — he made good courses.
Even on bad sites, his routings were good or better. In the late 1960s and 1970s, as land became more expensive, I see Bell courses that are well tighter than they should be. This is problematic when we try and create something new out of them — there simply is not room to do a lot except work with hazards. usually, however, Bell (both Sr. and Jr.) left a trademark of triangles in their routings. We find these over and over, often putting them to modern-day use with new greans, shifted holes, etc.