Are there several implementations of the Stratum mining protocol?

Question

The best way to understand how something works is to get your hands dirty. With this in mind, I've started developing a cryptocurrency miner.

I'm implementing the part that allows me to communicate with the mining pool (via the Stratum protocol) and I'm already running into a problem with the mining.notify method parameters (from which I'm supposed to create a job).

Based on several Stratum protocol docs I've found here and there, I'm supposed to have 9 parameters detailed as follows:

The params contain 9 items:
[0] Job_ID - The 32-bit job ID.
[1] PrevHash - The previous block hash.
[2] Coinbase1 - The first part of the coinbase.
[3] Coinbase2 - The final part of the coinbase.
[4] MerkleBranch - Array of hashes to be used to calculate merkle root.
[5] Version - Block version.
[6] Bits - Encoded current network difficulty.
[7] Time - Current nTime.
[8] CleanJobs - True to invalidate all previous jobs due to a new block. False indicates the job is part of the same block as previous job. Previous jobs in same block are still valid.

However, on the few pools I've tested, I don't get the same parameters, and not at all in the right order (the Boolean, which I think corresponds to CleanJobs, is in the middle of the others)...

A few examples of what I get:

{
    "id": null,
    "method": "mining.notify",
    "params": [
        "957",
        "30df0ea4f2e07d339bb378054e33dfab5091ae436297ed8142a0a9b247dda45b",
        "05bdd2c084d534ca95b954a616e56c8a126ba4a1e77257bf1c3ce22d8ccc5769",
        "00000009fff60000000000000000000000000000000000000000000000000000",
        true,
        458890,
        "1b06d58a"
    ]
}

or

{
    "id": null,
    "method": "mining.notify",
    "params": [
        "770450403241227",
        "04000000",
        "6c77ff9d95248417d8bfa134cc540e97dd1037bb7c2ecb36d3e007fd0b000000",
        "eaa8f2941f909df0283e607d932cfe6c67ba861cdc7898434065e00a4594d597",
        "d9988e7adc9c6da15d12246eeb18623d1f8039f5ee6bcae29261e383248d7522",
        "637e3a65",
        "81a10e1d",
        true,
        "125_4",
        "ZelProof"
    ]
}

The mining pools I tested (different algorithms):

• kawpow.eu.mine.zergpool.com
• de.etc.herominers.com
• zel.2miners.com

My question is a simple one: are there several implementations of the Stratum protocol, depending on the algorithms involved, in which case how do I find these documentations (I've scoured the net, and I always come across the same thing)?