With Hybrids, bulbs all tend to look the same within the groups: Asiatic hybrids, trumpet hybrids, martagon hybrids, oriental hybrids, etc.
But not so with species. Each can have their own individuality that might even be a key characteristic to their identity. Growth patterns are often revealed in underground study, too. I regret to say I have not taken a lot of pics of lily bulbs. It takes some time to stop my bulb planting for a photo op: I need at least cleanish hands, good background, a hand sprayer to gently wash the dirt off, etc. But I have gotten a few interesting pics.
Fairly typical of trumpet types,