As the other commenter said, there are bulbs that mimic the filament of an incandescent bulb. On top of that there are designs that go beyond that. E.g. I have

As the other commenter said, there are bulbs that mimic the filament of an incandescent bulb. On top of that there are designs that go beyond that. E.g. I have a bulb that has LEDs shine light through sculpted plexiglass, creating a beautiful pattern of warm light inside the bulb. This goes beyond what an incandescent bulb can do.