Early on? Knight is a solid tanky job class and I usually make someone go into Knight so they can take more hits and use their 'rend' powers to lower stats or disable equipment which is useful in neutralising some enemies and make them hit for nothing. At Level 3 it unlocks the Monk class which is a very good job class for Ramza and in general.

The Monk is powerful and strong, and is self-supportive with the Chakra ability which heals HP and MP, with MP being a precious commodity. With high bravery, the Monk can do a ton of damage.

On the support side, I find Chemists to still have use as they can throw instant-healing items over fairly large distances and can control exactly who is healed or not. They're not excellent at combat, though. I tend to give the Item command to another job like the Archer.

The problem with magic is it requires casting time, and enemies can be healed and allies can be damaged depending on the area of effect. Chemists eliminate that problem. Still, white mage abilities are very useful and a Black Mages are nukes. I tend to make someone a Black Mage, learn white mage abilities and give them the White mage abilities as their secondary skillset.

Oh, and I generally make someone a Thief, so they can steal some rare equipment.

My general team in the early game was:

Ramza: Monk (Heavy Hitter/Self-reliant)
Knight (Tanky debuffer)
Black Mage: (Nuke, with WHM Skills)
Archer: (Long-range offence with CHM Skills)
Thief: (Skirmisher)

Of course all that's variable to change, and I'm running on memory. But I definitely had a monk.

The main thing to remember is to always combine jobs and their abilities for the greatest reward. I might not want to use the Chemist job class, but the Item action ability is useful.