William Branham gets mentioned somewhat positively among some of the people in the signs and wonders movement. There is this small group that listens to his recordings in church, that his son was a leader in at some point in time. It is possible that some Pentecostal pastor somewhere outside of that movement had a positive opinion of Branham and shared it. But generally, I would think you won't find the vast majority of Pentecostals extolling Braham.
I was raised Pentecostal and I never heard of Branham until I borrowed a Roberts Liardon 'God's Generals' video in the early 1990's. This was a VHS tape with a young, thin Liardon, not the later series with the heftier Liardon. Liardon was in the 'Word of Faith' movement, not what I would call Pentecostal.
There are various movements that are somewhat similar. The Pentecostal movement started in the early 1900's, depending on who you talk to. There was a Welsh Revival and a revival in the mountains of North Carolina and Tennessee that had speaking in tongues and some other movements. In the US, there was a large revival that influenced a lot of missionaries and people in the Holiness Movement and various other evangelicals in Los Angeles California on Azusa Street as people there began to speak in tongues. There are many accounts of people hearing their own language 'in tongues' both there and in the rapidly growing Pentecostal movement from that time, and some of people speaking in tongues and others confirming both that and the interpretation of tongues.
At the same time, there were Pentecostal revivals in South America and India, so it didn't all come out of Azusa Street. Pentecostals believed in speaking tongues, interpretation of tongues, healing, and typically prophecy also. Certain denominations grew out of this, like the Assemblies of God. Other denominations like the Church of God in Christ became part of the Pentecostal movement. There was a denominational split with the Methodist Church of North Carolina resulting in the Pentecostal Holiness denomination.
A subset of the loosely affiliated Assemblies of God members, which didn't have a doctrinal statement, began preaching Oneness, non-trinitarian doctrine. So the Assemblies of God created a doctrinal statement which accepted a trinitarian viewpoint and caused the oneness to leave. A large group of them formed the United Pentecostal Church, now UPCI. Maye 5% of Pentecostals are Oneness. Typically, these are the ones who say you aren't saved if you don't speak in tongues, while generally other Pentecostals do not believe that. Trinitarian Pentecostal denominations consider baptism with the Holy Spirit to be an experience that can be subsequent to receiving salvation.
Around 1948 or 1949, William Branham started holding healing crusades. They say he brought a blind person on stage who was healed before everyone's eyes. They say he saw the angel of the Lord over people that were to be healed. He'd tell people detailed information about themselves. Some Pentecostals got together to support his crusades. But at least at some point, his teaching became or was more like Oneness Pentecostalism, and seemed to have this idea that some people are 'serpent's seed'-- maybe a biological kind of predestination belief. He would talk about his visions. As his doctrine got a little more unusual, Braham got his own following and was less connected with other churches. Some of his followers, which some call 'Branhamites' consider him to be one of the messengers of the church ages, an interpretation of the passage about angels of the churches in Revelation 2-3. He was considered to be an end-time Elijah. I heard some people even expected him to rise from the dead after he died.
Most Pentecostals have never heard of the man.
After the Pentecostal movement, in the 1960's, some Christians from 'mainline' churches began to embrace doctrine like Pentecostals on the baptism of the Holy Spirit and spiritual gifts. These people were called Charismatics after a New Testament Greek word for spiritual gifts. A lot of them started Charismatic churches. A Baptist, named Kenneth Hagin, who was an Assemblies of God preacher for a while, who was influenced by EW Kenyon's teachings on faith went independent taught faith and influenced people in what was known as the Word of Faith movement. While some WOF teaching might influence an individual Pentecostal pastor, some of the Pentecostal denominations against some off the odd ideas flying around in the WOF movement. The WOF movement is more likely to influence the importance of faith resulting in financial so-called 'blessings', and there have been a number of controversial teachings like the idea that Jesus died spiritually after his crucifixion, and teaching on Christians being 'little gods'.
Roberts Liardon was in the WOF movement, and he made a video that focused on past individuals who had healing ministries as being 'God's Generals.'
Kenneth Hagin told about a preacher who was gifted as a prophet but tried to be a teacher but wasn't called to that, that Hagin sent a warning to. He spoke about how some people believed this preacher would rise from the dead. (I say spoke, because this was in one of his books, and I think Hagin's books may be transcribed sermons.) An author I read said he wrote Hagin and Hagin confirmed that he was speaking of Branham.
There is also the signs and wonders movement. In the 1980's, Fuller professor Peter Wagner called churches that embraced spiritual gifts that weren't a historical part of the Charismatic movement 'Third Wave' churches. This term isn't all that popular, but some of these types of churches developed into churches that emphasized personal prophecy, signs and wonders, and some of them became part of the 'New Apostolic Reformation.' Since some of the prophetic movement/signs and wonders churches had interaction with a preacher who used to minister with Branham, some of them studied about Branham and sometimes say positive things about him, but others are a bit concerned with some of the doctrinal issues later in his life.
Branham is held in high regard by Branhamites. I've never met one. I think they have congregations in the US and Africa, and listen to Branham's recordings, if the movement hasn't fizzled out. He's gotten some attention by WOFers. Some of the signs and wonders people might mention him. I'm not sure if he shows up in sermons or just in conversations. I've never heard him mentioned in a sermon by a signs and wonders movement preacher. I think Liardon had tape series about him. I don't know if even Liardon would mention Branham in a sermon back when he was pastoring, but i don't know.
IMO, it would be very unlikely that you'd go to a Pentecostal church and hear a sermon mention Branham. You probably wouldn't hear William Seymour mentioned either. It is extremely unlikely. Most Pentecostals have never heard of William Branham. If you come across someone who is into Pentecostal or American religious history, maybe that person has heard of him.