jett, viper, cypher, and 2 of [skye, sova, phoenix, breach].
explanation:
jett - obvious, best duelist in the game
viper - imo better than the other controllers on this map bc of her wall. She'll need lineups for orbs and postplant tho, and if you don't have/can't find those, Astra might be better.
cypher - should be the best sentinel here. With 4 site entrances and so many passages, the 2 trips are insane crossmap info gathering that KJ just can't replicate.
skye - just an all-around great agent atm, insane info gathering, fits on every map and I don't see why not here.
sova - with 4 ways to come on site his arrow is as useful as ever. I don't think this is his best map, but it doesn't need to be for him to still be extremely useful.
breach - his flashes are really good on this map, you can blind into the sites from quite far away, and the quakes and aftershocks are good too since there's lots of cheeky corners and verticality
phoenix - might seems like an odd choice given his current (lack of) place in the meta but imo he's the best 2nd duelist here. 4 ult orbs will keep arguably the best ult in the game online often and his wall is plenty long enough to cover most the passages and sites.