Hitman 3 Deluxe is all you need and I’ll explain why.
Before I was able to find a ps5, I had all 3 hitman games on my ps4 pro. They all plated well and looked good. The 3rd installment even included VR access. I noticed that with the ps5 hitman deluxe edition, there is no longer any need for the ps4 version of the first, second, and third hitman games. Once I installed the deluxe edition on my ps5, I noticed that the game encompassed all 3 of them. With that, I was able to sell all the ps4 versions of the games for a good price and I still retain all data from those previous entries in the series. Furthermore, this title has the option to retrieve any data or game saves you may have already earned or made. I think some call it crossplay or cross saving. To make a long story short. You really just need the 3rd hit man game with the deluxe features and you will essentially have access to all three of the recent titles. I’m not positive you won’t have to buy an access pass or something, but it’s still cheaper and better than buying all three games when the 3rd one serves as a hub for all 3. You’ll even get the voucher for the VR access with the deluxe edition. Sadly, they haven’t announced compatibility with the upcoming PSVR2. So if you’re planning on playing using VR, you’ll have to have the game loaded as the ps4 version. It sounds silly, but it is possible to have both ps4 and ps5 versions of the same game on your ps5 simultaneously.