Indenture contracts most often guaranteed the servant land upon finishing their obligations. It was an upwardly mobile system that allowed settlers to enter debt for entrance into the colonial planter class. Indenture was basically dead for over 50 years by the time black sharecroppers became the dominant form of agricultural worker for black people.
Indentured servants were still part of the colonizer class, and were obligated to defend the colonies in militias alongside their masters. Indenture fell out of fashion after a series of servant revolts through which the servants won significant rights in the colonies. These revolts increased the planter class' reliance on African slaves. By the time of the Revolution indenture was basically irrelevant.
Decolonial Marxism is perfectly compatible with MLism, in fact it is a reorientation of MLism, into the perspective of the colonized. Colonization is the subjugation of one nation by another. It is the purpose of Marxists in the colonizer nation to practice defeatism in solidarity with their nation's colonized peoples. The Marxists of the colonized nations need to defeat the chains of Imperialism by fighting against their colonizers.
America being a settler state, a state by and for settlers where settlers exercise political supremacy (as seen in the Navajo water case just ruled by the SC), lives alongside its primary colonial subjects, the extant indigenous nations (most are still around) and the black nation. The secondary subjects being the migrant workers from colonized nations around the world (predominantly Latinos and Asians).
The Settlers as a nation are a colonizer class above the indigenous and black people. The contradiction between settlers of the bourgeoisie and property-less is secondary to the nation-state's looting of indigenous land and super-exploiting black workers. The Pick-Sloan dams are a prime example of the white laborers working on genocidal projects that benefited white people overall. The condemnation of black and asian neighborhoods made way for downtown highways for white beneficiaries of the GI bill.
America has massive weaknesses in the production of Imperialism, namely in the necessity of the US to continue colonization of indigenous territory to maintain dollar imperialism. The DAPL and KXL protests blocked and delayed massive oil projects that the US and Canada need to control the price of oil. Biden has signed off on massive drilling projects in Alaska on indigenous land where the residents don't have running water or electricity. This project is to replace the reliance on Saudi Arabia in maintaining a low price of oil. In response to unfavorable global conditions, the settler states dip into their own resources to replenish their empire. I think MLs in America should focus on attacking the US in its arteries, the production chain of imperialism. The dismantling of White Supremacy means removing White rule over the vast territories of North America and depriving the settlers of a state for themselves. The Dictatorship of the Colonized Nations is the necessary form of state that will replace the US, Canada, and Mexico.
It's a retronym, Marxist theorists in this space never unified the theories and applications of ML utilized by Fanon, Rodney, Lushaba, Wynter, etc., under a specific title. However, the revolutions in Cuba, Vietnam, and China have been Decolonial in nature and should be studied in the way they took special attention to the society of the colonized masses when constructing Socialism that would go on to challenge and defeat Colonial rule.
The basis is the refusal to start history at the time of colonization, or from the reference point of the colonizers. The context of the settler states needs to start before the settlers arrived, how they arrived and came to dominate, and understand the protracted resistance against the settlers. When understanding the structure of a particular colonization, which is really how national resources are processed and consumed, we can see the relationship between the colonizer class and the colonized.
When I say Decolonization is a reorientation of ML I mean that ML was developed to explain the need for the proletariats of Imperial nations to understand the development of Imperialism in relation to class struggle. The American MLs know they need revolutionary defeatism but they do not understand what they need to defeat and where. The struggle for gender is one of deconstructing Colonialism, the struggle for race is one of deconstructing Colonialism, the struggle for the environment is one of deconstructing Colonialism. The struggle for class is one of deconstructing Colonialism. Decolonial Marxism is Scientific Socialism that builds a society that supplants the Colonial order.