While this may look like a standard Meta, lando, zapdos, lele/fini build, it has some very particular differences I have used since before VGC 18,
Mega Meta - I am not sure that it needs to be explained, standard set, it hits things hard and mildy fast.

Zapdos has equal amounts bulk and utility, it can take ice punch and zen in psy terrain from mega meta and usually fake out + double edge from a not max att adamant Kang, it doesnt really need speed so I didnt ev really any speed, sp att allows to hit under 75 on most bulky fini and over 75 on most specs

Landorus is AV to allow it to have some staying power to be used more like a utility poke with knock off, cycling intimidate, and rock tomb, but earth power is a good alternative as a single target ground move, especially with the emergence of intimiroar, it made it much more useful, speed is to outspeed zap to ensure knock off, and sp def is because lowering it even with AV was painful

Fini is pretty standard Waterium Z build w/o calm mind, i chose haze instead because I needed a check for memes and snorlax and its not useful 90 % of games, but when it is used its pretty clutch to have

Lele is a hyper offensive mon trapped in a bulky looking body, LO lele in general just does a ton of damage, I have always prefered Dazzling gleam in general to pick up KOs while also doing chip damage, Psyshock was chosen over psychic for volcarona,ludicolo, char y, and AV matchups without losing much power, HP fire is my own personal touch I chose over taunt because it checks/does a decent amount of damage to Abomasnow, Metagross, Celesteela, Aegislash, Scizor, (kartana because of psyshock), and mawile, which Lele usually cant touch.

P2- while people will have their opinion that P2 needs recover, I prefer to run a more offensive mixed attacking P2 in general and it also jives with this team much better, P2 is the bail out/ get out of jail free  pokemon which can set up trick room for your mons, which all run slightly slower than most pokemon of the same type run on other teams, it also lends itself to fit between speed tiers in trick room to give an option to help counter trick room