It varies
A general tactic would be taking ST, then sending delaying force to BS (no more then 3, usually 2 a healer + tank) - the main group (remeber in rated you only have 10 people) to take LM quickly with the hope of getting LM before the people at BS are killed. Ghosting ST to gain more people at LM or sending a lone dps to mine is optional.
But your tactics would vary on the oppositions makeup
(and how sure you were of winning main fights)
When premade groups in non rated was a thing, my favourite tactic as a full 15 premade was 5 capping (yes full premades were horrendous to play against) wed cap ST ghost it, send 5 people to LM, 5 to GM 5 to BS, whoever got their base first moved on to Farm before hopefully it was capped -the others joined when they could leaving 1 to defend BS, LM, Mine. Most of the time, assuming it went well you got all 5 before horde got a single point. Happy times.
Now when playing with friends, we usually just take BS, then see where needs help :P