In terms of their governments. Like did they have cooperative foreign policy as little statelets or what? Both were short lived in the long term, but did they have something like camaraderie as very small states who wanted independence from their southern neighbor?
Edit: especially in regard to race and the griqua being another force not necessarily subservient to the cape
OK, this is a hard one to know where to begin. If we start from the primise that, at the time of the Sand River (1852) and Bloemfontein (1854) Conventions which established effectively independent governance by compact north of the Vaal and Orange Rivers, there were two Griqua captaincies, things are a bit simpler. The two captaincies, those of the Waterboers at Griekwastad (Griquatown) and Adam Kok at Philippolis, were well known for being horseback raiders (as were the Boers, the Koranna, !Kora, BaSotho, Barolong, you name it on the Highveld) and gave out lands to their own burghers on a system that really wasn't entirely unlike that of the nascent Republics. However, they didn't actively work together, not in the way that (say) the Free Staters and Moshoeshoe's baSotho, or the Ohrigstad people and the emaSwati did. The boundaries between them were very poorly defined, however, which becomes important later.
Waterboer, if not Kok, was in fact on retainer for the British, who paid an allowance in a patron-client relationship (in reality, it was a bit of a payment to keep Griqua raiders away from the northern Cape). The London Missionary Society was active there, and no serious affinity existed. The burghers in the Free State, which would have had such a relationship most likely, very deliberately had a heritage based test for citizenship rights.
In the case of Philippolis, the Free State--which until 1886 was the wealthier of the two Boer Republics by far, not to mention the most stable, given that the people north of the Vaal descended into virtual civil war in the early 1860s--the Boers actually bought out Adam Kok's people in 1861, at a fairly generous price compared to the value of land on the broader market then. Kok's people moved across the Drakensberg mountains to an area that became known as Griqualand East--a really remarkable journey--to set up a new state, in an area called "Nomansland" but really just an area of communities under weak central authority. This new Griqualand , with its capital Kokstad, was annexed in 1874 by the British; it's part of the Eastern Cape to this day, after its official appending to the Cape Colony in 1879. Bantu-speakers and European settlers effectively swamped the eastern Griqua, and their political power diminished after failed rebellion against British conditions. But they were specifically eyed as a buffer against possible Boer expansion into the region, at least initially. Karel Schoeman's written a lot about them--many books and document collections--and even Robert Ross's old Adam Kok's Griquas is worth reading. But Karel's work is much newer.
As for Waterboer, well, the story of the Griekwastad captaincy is tied up with the discovery of diamonds and the major strike that would become the site of Kimberley after 1867. Without well defined borders, the Free State Boers sought to claim the area, as did the Griqua, and the Transvaal (South African Republic) Boers even extended their settlement finger southwest towards it. Ultimately the situation was volatile enough that Lt. Governor Keate of Natal was called in 1871 to arbitrate, and a number of surveyors and testimonies tried to determine the facts of the things. (The proceedings and evidence were published in the very rare Bloemhof Blue Book [edit: I have my docs mixed up. The Blue Book covers the later argument over Transvaal claims, not the initial spate].) The resulting award put the boundary line just east of Kimberley--dropping the diamonds into Griqualand West--and the British made a compensatory payment to the Free State. Within a few months, the British had made GLW a crown colony; they stipulated a full survey and assay of all lands and titles, which actually forced a lot of Griqua to sell because they couldn't afford to have their lands registered to British standards. The progressive loss of their state in court, etc., eventually led to a short-lived series of rebellions near the end of the 1870s, and the extinguishing of Griqua power there by 1880, when it too was annexed to the Cape Colony. I'm not aware of any systematic treatment more recent than the first half of Kevin Shillington's The Colonisation of the Southern Tswana (1985!) but it is a very thorough piece of work.
So no, there really was no camaraderie. Griqua had been like very distant trekboers, not voortrekkers; they were distinctly different from the Boers themselves, despite their speaking various creole dialects of Dutch (proto-Afrikaans). There were almost certainly some conversations, encounters, and conflicts between burghers of the respective polities, and perhaps equitable exchange--but they clearly saw each other as being different in allegiance, if not in terms we'd consider ethnic or racial today.
One side note: I mentioned that the Transvaal/ZAR didn't have much in terms of dealings with Griqua polities. That doesn't mean that people of mixed settler heritage were not there! The Buys people, in the far north (southwest of the Soutpansberg mountains) were actually quite instrumental in maintaining some sort of ZAR presence in the region in the face of Venda disapproval. They permitted missionaries and provided way-stations, as well as stores. But they weren't a state of their own--rather an extended clan that had moved in from the Cape in the early 19th century before Louis Tregardt and his contemporaries. The Buysen were useful political foils, and had affinities with the Boers, but there is always a discourse of difference connected to them. (See DRC missionary Stefanus Hofmeyr's Twintig Jaren in Zoutpansberg, available public domain, for recollections--warning, it's in Dutch, and indeed most material on the old ZAR is in Dutch or Afrikaans. There may be theses on the Buys people, and I've met a fair number of them myself, so they are also enjoying a bit of identity resurgence but not on the scale of Griqua these days.)