There’s no ultimate kit, it totally depends what you’re trying to make with it.
That said, here’s how I’ve been using my AR to make full tracks. I’m working on an EP that’s roughly East Coast hip-hop (RZA, DJ Premier, Pete Rock) meets something dancier (footwork, disco, whatever).
BD and BT = kick drum(s) and/or bass. Occasionally I’ll use two kicks, but usually I establish one then use the other track for bass if necessary. I really like the BT as a kick.
Snare = snare, usually a layered snare + sample
RS = snap from a sample (I use that much more than a rimshot sound). Sometimes a HH sound instead
Clap = clap. I use a lot of claps, at least as much as snare. Most of the time I use synth + sample. Sometimes to mix it up I use clap synth + snare sample. I like setting the LFO to subtly and slowly modulate noise decay or sample/synth volume to give it some depth.
LT = sometimes use it as a bass synth. I don’t consistently use this track yet.
MT = my main sample for a track. I load a sample that I chop in my DAW here, and “slice” it (p-lock start point) to create the main harmonic content for my track. A lot of my work is on this pad.
HT = sometimes an alternate to the MT, but I don’t consistently use this track.
CH = hi-hat. I don’t totally love the synth engine on this one, but sometimes I layer it with a sample and modulate some element of it to give variation.
OH = same as previous, but open
CY = Generally this is my main melodic track. I’ve been loading up short vocal phrases with this one, and frequently p-locking the filter, delay, etc. Sometimes I’ll also load a synth waveform or sample and use it as a lead.
CB = lead. I either use the synth engine as a lead or drop a synth sample in here