It sounds like you've stumbled upon something similar yourself over time but I base mine off of my Recon Support Guide.
The thing is Recon Support as a doctrine is underwhelming. You really have to squeeze value out of the Greyhound to get anything out of it and the Greyhound is just okay.
These days I have been playing Rifle Company and Airborne Company instead.
My basic LT build:
- Riflemen
- Riflemen
- Rear Echelon and Fuel Cache or Veteran Riflemen (Airborne vs Rifle Company)
- Lieutenant
- .50 Cal HMG
- Ambulance
- Bazooka Research
- Either Rear Echelon Squad or LMG Paratrooper squad (Rifle vs Airborne)
- Major
- M8A1
- Sometimes a second HMG
- M8A1
- Spam 'Easy Eights' or Sherman + Jackson if Airborne.
That's a little confusing because it has two Companies baked into it but the basic idea is this.
Early game your Rear Echelons provide solid light AT. Your LT, .50 Caliber HMG and Paratroopers/Veteran Riflemen provides good anti-infantry. Your Riflemen can help with either task.
You spend ~65 fuel before you get your Major so your M8A1s come out extremely early; it's not uncommon to get them before the 11th minute. This is really good timing as the M8A1 direct fire is just sort of overpowered. Screen the enemy lines with infantry and then let the M8A1 turn each fight. The speed of your M8A1 means that the enemy has no chance of really having anything other than a Puma out. That's fine though. Your Rear Echelon squads should stick to the M8A1 like glue and scare away tank hunter predators and keep it healthy.
The key to fighting blobs is the .50 Caliber HMG and the M8A1. .50 Caliber is a monster even with the "nerf" it got when they fixed that bug. It suppresses, it slices, it dices. It's quite fragile though so keep your LT and Paratroopers near it so they can leverage their high damage weapons to protect it from flanks.
I like to grab a second M8A1. Many enemies see armored units and say "shit, we need a Pak40". With two M8A1s though you can easily punish blobs and support weapons alike. This can feel dangerous though because Axis armor is scary! However Bazookas are often underestimated. You can always grab more Bazookas. Sometimes it's wise to grab them on your Riflemen too.
Your late game strategy will diverge depending on your doctrine.
I have just been experimenting with Rifle Company and I've been pleased. The 'Easy Eight' remains super strong. That being said if you're particularly afraid of heavy armor then go Airborne. Late game you can store munitions for the P-47. It's such a good anti-tank call-in that it makes the doctrine. The key is to throw down the strafing run when he commits with his tanks. The P-47 will do the most damage then. Airborne also has air-dropped AT guns so you can shore up the defense of your M8A1s if you feel uncomfortable.
Here's a replay of the Airborne side of things in action. I make mistakes but you can basically see that if you keep your rushed M8A1s alive they will win you the game against the blobs. Note how well the M8A1s crush enemy trucks when you get 2-3 of them. Going on the aggressive and knocking out the enemy's field position before they get heavy armor can really help.
Here's a Rifle Company version. This game is more "pristine": I feel like I made the right choices and kept on top of my micro fairy well. It's x2 USF vs x2 OKW but there's plenty of infantry blobs so you can see how well they get handled. It was my first attempt at the Rife Company version of this build I am pretty pleased with it.
I don't get the Fuel Cache early with Rifle Company (which sort of slows down the M8A1s) but you can see that the three Rifles + Vet means that with good micro and decision making you can win any fight early.
... this game made me think "Yeah, wow, M8A1s are OP".