Which funds can replace VUSTX?

Which mutual funds can replace VUSTX?

Which mutual funds can replace VUSTX? ranked by return similarity
RankTickerFundReturn similarity
1VLGSXVanguard Long-Term Treasury Index Fund Admiral Shares99.9%
2FNBGXFidelity Long-Term Treasury Bond Index Fund99.9%
3PRUUXT. Rowe Price U.S. Treasury Long-Term Index Fund I Class99.9%
4FTLTXFidelity Series Long-Term Treasury Bond Index Fund99.9%
5PFGAXPIMCO Long-Term U.S. Government Fund Class A99.7%
6FBLTXFidelity SAI Long-Term Treasury Bond Index Fund99.5%
7WTLGXWisdomtree Long-Term Treasury Digital Fund N/A99.4%
8DLLDXDoubleLine Long Duration Total Return Bond Fund Class N99.0%
9VBLAXVanguard Long-Term Bond Index Fund Admiral Shares97.6%
10PLRAXPIMCO Long Duration Total Return Fund Class A97.5%
11RYGBXRydex Government Long Bond 1.2x Strategy Fund Investor Class95.6%
12GVPIXProFunds U.S. Government Plus Fund Investor Class95.0%
13WHOSXWasatch-Hoisington U.S. Treasury Fund94.9%
14VWESXVanguard Long-Term Investment-Grade Fund Investor Shares93.5%
15FLDBXFranklin Long Duration Credit Fund Class R693.2%
16TLCDXTransamerica Long Credit A93.1%
17PLCPXPIMCO Long-Term Credit Bond Fund Class I-292.1%
18VLTCXVanguard Long-Term Corporate Bond Index Fund Admiral Shares91.5%
19PEDIXPIMCO Extended Duration Fund Institutional Class90.3%
20DEEAXNomura Extended Duration Bond Fund Class A89.6%