Personally, for farming, I've settled on 8 giants, 4-6 wall breakers, 20 goblins, maybe 4 minions, and the rest archers. This is with level 5 troops, around
1800-2100 trophies. I do have a King and Queen now, but only use them occasionally. I typically take 2 rage, 1 heal, and 1 lightning, but don't use the spells much. My clan castle is usually archers, sometimes a wizard or two, sometimes a few minions, occasionally a dragon; I don't use my castle much on attack though.
This army has minimal "heavies", but can actually break into the core of TH8 and some TH9, if required, especially if you have a king and/or queen available and it's worth the effort. It's also an extremely good army for collector farming at higher trophies, where typically you have to take out a King (and maybe queen), and the collectors are all behind walls or at least protected by tessla / archer towers / air defenses. I've used it succesfully this week, to raid for exlier as well as DE, and of course have made plenty of gold from it too. But mainly it's a very flexible army for TH8+, at higher trophies, where you can have a good look for bases offering 200k+ of each, often 250k+ of each as well as DE.
I'm a brand new TH9, and have been farming elixer for the last 7 days. This army has made me over 12M elixer profit (enough for 2 camp upgrades, level 1 DE drill, 6M for giants to level 6, and a few upgrades of my new gold storage), about 20K DE (getting close to the 25k for level 3 queen), and as I've had no spells for 5 of the 7 days I've also probably made a heap of gold (no idea how much, probably about 10M - I've got my 50 new walls all up to level 7, some of my old walls to level 8 i.e. skull, and got all the new defenses built to level 1 including 1M for a new tessla). As I only make a couple of raids in the morning, and then a few hours in the evening, that's a pretty good result given I'm TH9 with TH8 troops, and am a good donator to my clan (usually archers and minions, if I'm saving hard for elixer and DE).
Note: I found gold 1 to be pretty barren, once I got towards Crystal I've found the loot much better. Possibly just the weekly cycle of poor loot mid-week, but typically I do find it easier to find good offers once I've got the Crystal badge (and the better loot bonus helps, too - sometimes you can TH snipe, but generally nearly all of my "farming" raids I do actualy aim for 50%).