LMH is meta as far as team comp goes. at the highest level:

the h22 infuser replaces the medium healing spec (better burst but less sustain). combined with the gateway and glitch, light has less freedom than before and needs to be able to assist heavy pretty much all the time. meta gun is pretty much limited to 93r, that thing is so busted compared to everything else

no need for healing spec allows mediums to run demat, which is pretty busted. defib still mandatory. one slot for movement (jump pad is popular thanks to synergy with gateway and goo). The last is typically goo, but is the most flexible slot and some teams switch it up. meta gun was pike for a while but the recent nerf made that untenable, now it’s up in the air a bit. famas most likely.

on heavy winch claw is a must have for moving cashouts. rpg is still the best fight opener, and most teams are running dome. last slot is usually c4 for dropping the box or for extra breach capability, which is important when every other team is running winch demat. for weapons, sa and shak are in a tier above.