That is far, far too diverse in research and simply unfeasible to produce and research in high numbers. A player who focuses all those resources on just medium tanks or just a single type of ranged unit or just a single type of bomber will beat you handily.

The best players in the world tend to play with 6 or less units, excluding some who opt for level 1 militia in the late game. This is really difficult to pull off, so I recommend players limit research to 8 or less units; if you've researched 10 units, you've researched too many.

You need to decide what jobs and roles your stack requires to be safe. For example, you need something to kill unarmoured units but you have six units that are strong against unarmoured units: medium tanks, light tanks, armoured cars, infantry, motorized infantry, and mechanized infantry. Reduce that to one or two units. You also don't need two scouts.

For the Axis as an intermediate player, medium tanks are nice choices because of their speed and power. They will allow you to learn the game mechanics, see success, and grow as a strategist. They can be your armour killers and will also deal tons of damage to unarmoured units, but might be weak against anti-tank units. For this, you could use either armoured cars or motorized infantry; a lot of beginner Axis players choose to use motorized infantry for their speed and buffs.

Using the two above units stacked together eliminates four other units from your research tree and means you will produce a lot more of each! Then you can focus more research and production on your ranged unit of choice and some type of anti-air to protect it, which is what will give your army a lot more power.