It is not possible for myself to recommend a Cart' to add to a list, as I don't have a broad experience of Cart's used in domestic systems and residences, most are heard from the period when I attended commercial events and many of these are obsolete.
To help reign in the traits of the 20/20 that are known for being very revealing, and options that should not require too much monies look at the following:
1, The 20/20 Phono Pre' has load setting adjustment, speak to the producer and let them to suggest a setting to assist with High Frequency Roll Off, this might be all that is required.
2, I have had great success with 5mm Forex Foam used as a Platter Mat, this material in this thickness has kept all the wanted intricate detail from the recording, but added a Rich Tone at the expense of the Upper Frequencies. I am yet to meet anybody who experienced the 5mm in use across a variety of TT's, who are not impressed with the performance and bang for buck element. I got a batch of Forex Foam in 3mm and 5mm for approx' $30ish. I have been quite tempted to try this in 8mm as a result of the substantial jump in impression made between 3mm-5mm.
3, A Signal Wire in a Cable produced with D.U.C.C Wire, has shown a Rich Tone in all the systems I have loaned such a Cable type to, a careful search could get a 6N Purity for $70 - $100+.
4, A SUT 'will' add a Rich Tone at the expense of the highest frequencies and certain brands can Roll of the Highs very noticeably to make way for having a very weighty loose bass presence, a SUT loan would be the best practice for this method.