"natural warm sound with emphasis on the lower frequencies".
A few things to try:
Get an SM58 or similar dynamic mic. This type of mic has a proximity effect that occurs when you get very close too it. The proximity effect boosts the bass when you get closer to it.
Note: the RE20 dynamic mic does not have the proximity effect. EV designed it to cancel out the proximity effect.
It is still a very good mic for voice-over and is the standard mic for most radio stations.
Another idea: try a ribbon mic. It will have a huge proximity effect. The closer you get the bassier it gets. Ribbon mics typically have a smooth frequency response with a roll off on the high end, very warm sounding.
That said, almost any mic with a cardioid pattern (directional) will emphasize the lows when you get close to the mic.
Your AT2035 will probably work. Get a wind screen/pop filter and place it an inch away from the mic. Speak into the mic at this distance and you will observe the proximity effect. It may be what you are looking for.