The situation about sampling got worst and worst the last 10 years-ish, from what I saw online and in the news. A lot more of copyright holders being super aggressive and going down on a lot of artists simply because right know a song can pop up in the charts more rapidly than before. And also, you have to remember that a lot of label are currently the holders of the rights no specially the artist and a lot of people are working on buying back-catalog here and there to consolidate their revenues because a lot of artists are not the owners of their masters.
Right now, there is a whole business industry around clearing samples from actors like Splice, specialized companies working on that for labels or artists and the creation of stock/royality-free sample library.
To be honest, the only advice that I have heard that seemed sounds : “If you can recognized the sample by any way (ear, AI) and you do not want troubles, clear it or change it”. If you don’t care, don’t want to, you do you and you will see. If it’s for friends and personal use (ie a shop must pay a fee to play FM radio inside, a family don’t have to), you do the fuck you want. If you want to distribute on streaming platform, sell it ; you decide which risks is worth taking. By the way, the algorithm on streaming platform are not that clever and sometimes they could block the original music instead of the ones from the samples (see this part of Ben Jordan FAQ about sampling his music and why it won’t accept demands to do it : https://youtu.be/toxEDf3885A?t=87 : obvious warning IANAL ; just random dude on the internet linking videos to youtube)
If you look at hip hop, you will see how a lot of the sampling part of making beat is mostly gone replaced by more electronic music techniques and sounds design ; it can be because of trends but also the lessons learned about the big copyright lawsuits that we saw in the US and Europe. Plunderphonics is more punk than punk now