const excluded = []; // LOW skilled
const reserves = []; // only MEDIUM/HIGH skilled
const team = []; // only HIGH skilled

const allPlayers = [
    {
        name: 'personh1',
        skillLevel: 'HIGH'
    },
    {
        name: 'personh2',
        skillLevel: 'HIGH'
    },
    {
        name: 'personh3',
        skillLevel: 'HIGH'
    },
    {
        name: 'personm1',
        skillLevel: 'MEDIUM'
    },
    {
        name: 'personm2',
        skillLevel: 'MEDIUM'
    },
    {
        name: 'personl1',
        skillLevel: 'LOW'
    },
    {
        name: 'personl2',
        skillLevel: 'LOW'
    }
];

const maxTeamSize = 2;
const maxReservesSize = 2;

allPlayers.forEach(p => {
    if (p.skillLevel === 'HIGH') {
        if (team.length < maxTeamSize) {
            team.push(p);
        } else {
            reserves.push(p);
        }
    } else if (p.skillLevel === 'MEDIUM') {
        if (reserves.length < maxReservesSize) {
            reserves.push(p);
        } else {
            excluded.push(p);
        }
    } else {
        excluded.push(p);
    }
});

// functions defined elsewhere...
notifyOfInclusion(team.concat(reserves));
notifyOfExclusion(excluded);

team = R.slice(0, maxTeamSize, R.filter(p => p.skillLevel === 'HIGH', allPlayers));
reserves = R.slice(0, maxReservesSize, R.filter(p => (p.skillLevel === 'HIGH' || p.skillLevel === 'MEDIUM') && !R.contains(p, team), allPlayers));
excluded = R.filter(p => !R.contains(p, team) && !R.contains(p, reserves), allPlayers);

notifyOfInclusion(team.concat(reserves));
notifyOfExclusion(excluded);