Depends on your strengths and weaknesses, game type, map and opponent style. This gamer finds

Easiest are FMG9, striker with usual prof, QS sniper and does use BTW

Mid SMGs and maybe FAD

Hard ARS best ACR, SR used for sniping not a sniper so can't advise.

This gamer plays DOM cap n defend 2 so mobility from  mid point and CQ is order for the day PP90 with Ext mag works on tight or clustered maps. FAD for mid long rnge fights you get on bigger maps with less clutter and choke points.

I run PP90 with Rapid/Extended Slight of hand, Hardline, and Stalker. Its a great run and gun set up.

If that was the case,

MP7

FMG'9s

Type 95

ACR

Striker

lol all of the guns on your list besides the fmg9s have been mentioned in this thread

MP7 With RFand silencer with

sleight of hand pro

assassin pro

steady aim pro

works for me on the smaller maps but just as effective on the bigger maps we do have,i

prefer the scar for accrucey over the ACR although the fire rate is a tad slower i still think it outshoots the ACR, but thats just down to personal preferance , i have found the G36C to be a very good weapon with a silencer attached  also,