Can someone help me with a list of prominent (well-known) supporters of emancipation and abolition of slavery from Texas, Arkansas, Louisiana, and Mississippi that survived the civil war to at least 1895?
And before anybody does one of those "let me google that for you" things, I have googled it. It doesn't always help.
The problem you're going to run into here is that most of the politicians who supported the emancipation/black recruitment effort during the Civil War in OTL...people like Robert E. Lee, Jefferson Davis, Judah P. Benjamin...were already relatively old guys during the Civil War. By 1895 they are either dead or long retired from politics. This old guard will have been put out to pasture and a new generation of politicians...men who might have been very junior Congressmen or even State legislators during the Civil War and who would not have been in any way prominent at that time...will be in power.
There are some people who might still be around, mostly former military men who supported the black recruitment proposals during the war...
Patrick Cleburne...assuming we're talking about a Southern victory scenario here, it should be easy enough to arrange things so he survives the war...would be 67 years old in 1895. He was from Arkansas.
James Longstreet (who supported the black recruitment proposal during the war) would be 74, and was alive in 1895 in OTL. He was from Georgia, but could have moved to one of the States you're looking for after the war in a Southern Victory timeline.
P.G.T Beauregard, who supported the black recruitment proposal and after the war supported black civil rights...died in 1893 in OTL. It might be possible to have him survive a few years longer. He's from Louisiana, of course, and would have been 77 years old in 1895.
Henry Watkins Allen, former Governor of Louisiana whose letter to the RICHMOND ENQUIRER sparked the national debate which led to the final passage of the black recruitment law in OTL, went to Mexico after the war and died of dysentary (probably from drinking contaminated water) in 1866. In a Southern Victory scenario he no doubt doesn't go to Mexico and survives much longer. He was born in 1820 and would have been 75 years old in 1895.
Ethelbert Barksdale of Mississippi was the author of the OTL black recruitment law. He, like Beauregard, died in 1893, but butterflies from the ATL could cause him to live longer. He would have been 71 years old in 1895.
There may be others. I'll think on it and if I can think of anybody else, I'll post it. Unfortunately, my library is in storage right now (I moved to SC in December and most of my stuff is still in storage), otherwise I'd probably be able to get you a more complete list more easily.