Can anybody give a list of the optimal musters for each house?

It's fine if you only want to give a suggestion for one house, because then other people can come in with their suggestions for the other houses.

Well, here it also depends what other houses have done before.
In general, I feel like preceding mustering lowers payout for CP* order in the first turn. Since you have more units, most houses should expand in the first round.
Here are my suggestions.

Baratheon
With preceding mustering there is no more need to put CP* on Dragonstone in the first turn. Muster one footman and a ship in the port. This way you can take King's landing and get 3 power tokens. This seems optimal play to me.

Martell
Muster a ship in ESS and a footman. Then CP in Salt shore and march from Sunspear to Starfall with a footman and to Yronwood with a knight. Leave one footman behind in order to CP* in round 2.

Tyrell
If Martell mustered 2 ships, you should probably muster 2 of them as well. Otherwise, muster only one ship in WSS and one footman in Highgarden. Then you can march one footman to The Arbour, a knight to Oldtown and a footman to Three Towers.

Lannister

Lannister should probably muster a ship in the port and a footman. Then support(+1) in Golden Sound, CP in port, march(+0) in Lannisport, march(+1) in Stoney Sept to guarantee to get Riverrun.
Alternatively, you can CP* in Lannisport and CP in Stoney Sept for even more money and troops.

Greyjoy
Your power are the ships, therefore I would muster 2 additional ships in IMB. Then you can attack Lannister or Stark.


Stark
The north has plenty of resources, however, they are stretched thin. As a result, I would prioritize expanding on new territories. Muster a footman in The White Harbour. In Winterfell muster a footman and a ship in the Shivering Sea. Send both footmen from White Harbor to Karlhold and Castle Black. Send a knight from Winterfell to Moat Callin and one footman to Mountains of the Moon. Leave the last footman at Winterfell in order to use CP* next turn and muster there.
With this strategy, you will get 4 power tokens each turn and get some supply.

I play pre-mustering 3p way often! Why 3p? There's no alliance and therefore no backstabbing! Why premuster? Cause I play 6 round games and you need it!
Here's my remedy:
Baratheon
A knight in dragonstone
Lannister
A ship at sea and an ft in lannisport
Stark
A ship per port and an ft in Winterfell

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Not today!

In 6p games, baratheon has to be hyper mindful of his mustering, if he doesn't want to loose shipbreaker's bay in round 1!!

If i am martell, and see baratheon mustering 0 or 1 ships, then i will muster 1 ship in sea of dorne and 1 in east summer sea. On my first turn, i will consolidate in sunspear and move my two ships to east summer sea, where a +1 march is ready to wreak havoc in shipbreaker's bay.

Worst thing is that bara musters before martell, so he has no other option than to muster two ships, and it will still be locked on his options on round one, since martell's threat is just too big.

I really don't like pre mustering due to this fact.