Grain definitely an issue but then you expect that at 1600 ISO.
1: Interesting composition but I think you'll get binned for being too small. Maybe if the plane was at the top of the frame?
2: Neat idea but I think it falls in between, 'deliberate slow shutter to emphasise real speed' and 'sharp'. I suspect it'll get dumped.
3: OK, not really special enough to justify the high ISO and attendant grain and lack of sharpness.
4: Way too much grain and flare.
5: I like this. The grain's OK given the high ASA, the flare is nice and the tail is nicely lit up, it's pretty sharp too. [I might just have to go to LHR in the dark and have a go at this
6: Too much grain and flare.
I reckon 5 is by far your best bet here. I think they might have worked better if it had actually been darker so you're getting less of a cold blue sort of tone. Also, if you'd had something in the background you could have set some low shutter speeds, kept the ISO down for the grain and produced some really FAST