Mr. Cotten,
My post was specific to an OGML negotiated between a landowner (as the lessee of the OGML) and an oil and gas leasing agent (the named lessor in the OGML). In this specific OGML which I was looking at, signed in the early 40's the lessees (the landowners) signed with the lessor, who was an oil and gas landman/speculator, to develop these rancher's land into an area for hydrocarbon extraction and production. In the 40's OGML, the lessor kept the bonus money that would be paid for delays in starting of the work, etc., whereas the lessee (i.e. the landowner) got nothing, which made them non participating royalty owners, I believe. And I have wondered if anyone since this period of time (the 30's and 40's) had taken this type of lease into court and established a common law precedent, hopefully allowing the landowner to retain the participating royalty interest.
As you point out there are many different types of OGMLs out there, but some are notorious for being less than fair to the landowner, should the leasing agent (lessor in the OGML) be a person of less than reputable character and wanting to extract as much as possible from poor, and uneducated ranchers and farmers who could not afford attorneys during this period, i.e. the late 30's and 40's. But that is NOT, lumping all oil and gas leasing agents into the same pot.