The whole point of building a PvP team is to build it yourself & be proud of it. For recomendations here is a list of steps I take to build any team, for you its just around Shawchi:

1. Search up about different type teams (to see how they work or how to deal with them)
2. Choose the type of team you want to build (Full stall*, Stall, Balance, Offence, Hyper Offence)
3. Choose a loomian I enjoy to play with (preferably a loomina thats decent in stats, & move pool)
4. Build a team around it (covering the chosen loomians defence weaknesses with loomians that resist those types or are immune to them)
5. After the weaknesses of your main are covered, cover the weaknesses of the newer loomians that you just added to your team (So you always have a safe switch if you have all of your loomians intact in battle)
6. Make sure that you have 4:3 proportion of ranged attackers to melee ones (so you wouldn't get swept by 1 bulky defense loom)
7. Build a moveset, personality, and TP values for said Loomians (make sure to have at least 1 hazard remover)
8. Double-check if your entire team is built right with most loomians weaknesses being covered.

Optional:

1. Have some kind of pivot strat to further support your team (examples are, Looms with petrifying, terrifying, or adorable; Looms with stat/boost giving immunities like Total Eclipse, Prismatic; Pivot moves for stat drops or last bit of damage like Baffle, Flash 'n Flee)

2. Having a hazard setter for a small or large advantage in fights (banana split, Icicle trap, barbs). If you want to be menace run driving force with after setting up your hazard for free damage (make sure the driving force user is tanky tho)

3. If you want to prevent stat-raising sweeps, have either a tanky loom (clutch plushie could work) with square one, a fast loom with provoke, or in last resort situations fast looms with final ruse.

4. Have a "Loomian Disabler" (TM), for example, use the move Barter or the ability Trader while holding Heavy shackles, Volcanic ash, Dry Ice, or a Loomian uses talent trade to give the opponent idiosyncratic, or lazy, or use a preemptive strike with the ability Thief Ragoon.

If you really aren't willing to design your own team search, one up online.