I will usually have a front line of pikes or spears if the enemy has significant cavalry. If the enemy has primarily heavy cavalry, pikes are best with their shield wall. If primarily light cavalry, the spear schiltron is best as it doesn't have flanks. Pikes hit on the flanks are massacred. Often it is best to anchor the flanks of your front line with spear schiltrons rather than pikes regardless of what type of cavalry you are facing.

I will back up my front line with a mix of Venetian heavy infantry and/or dismounted feudal knights. The heavy infantry can strike back against any cavalry charge against the front line and the dismounted knights can counter against infantry attack.

Unfortunately, I have found the Venetian archers almost useless. With their armor and bows, initially I felt they would be ideal against eastern armies with their light cavalry and bowmen. Arrows would work perfectly fine against the low armor of eastern armies and the heavy armor of the Venetian archers would protect them against enemy bows. However, I have found the eastern armies use flame arrows to negate the armor advantage. My Venetian archers don't last long against the massed flame arrow attacks of the eastern armies. So IMO, the heavy armor of the Venetian archers provides very little advantage to compensate for their high cost. I have stopped using them as pavise crossbows have far better surviveability at lower costs.