I would start by experimenting with LPD developer, since it is so easy to get from the store and so easy to use it diluted various ways for various effects. Try it with a paper that will go warm easily. I would not use Ilford MGFB or Oriental. They have seemed pretty resistant to developer changes when I have tried. Both will go slightly creamy in the whites with "pseudo replenished" Ilford PQ developer. (To do this, I use the spent solution in place of water when it is time to mix more developer.) But the mids and blacks seem to stay neutral. I wouldn't call it a full-on "warm tone" effect. More like "tinting" the highlights. Kind of like a very mild tea toning.
Adox MCC 110 will respond to development changes pretty easily IME. If LPD isn't making you happy, maybe try homebrewing something. But for now, I'd experiment with Adox MCC 110 in LPD, since it is a relatively cheap and easy combination. I'll bet some of the Foma papers would work well too, but I couldn't tell you from personal experience.
Ilford Warmtone glossy fiber is an absolutely gorgeous paper IMO, because it isn't all that warm. It is barely noticeable if the print is not held next to a neutral one. The matte is quite brown in comparison, IME.
But it is ridiculously expensive. I will not buy it again unless it is a special occasion. I will just use MCC in LPD.