I'm basing my votes in the poll off two factors:
1 - Does it look good?
2 - Is it easy to work with in NeoLemmix?
As such, I'd say my votes are Classic, Egyptian, and Sports. Egyptian and Classic are often my go-to styles when I don't have a specific style in mind for a level - Classic basically being a version of Pillar that tiles nicely so it's easy to build up larger structures out of - the irregular block sizes of L1 pillar can be a pain to work with - blocks in L1 pillar really feel like irregular piles, while L2 classic feels more like actually building up larger structures from the smaller parts. At some point I'd like to attempt giving this treatment to some of the other L1 styles - specifically, anything that looks like it's constructed rather than natural. Grid compliant pieces really compliment my level building style well, and the constructed nature of the blocks in all 3 of these styles makes it look quite good while also not being difficult to work with.
Some of the styles are quite nice looking, but Cavelem and Outdoor, for example, are very difficult to create a level with, due to the nature of the pieces effectively being grid hiding tiles - they are grid compliant, but they're of course trying not to look like they're a grid, so they tend to be the worst of both worlds in terms of building up terrain.