Concerning the quark zero modes, the flavor structure of the above models as well as the phe- nomenology can be captured by using the following simple rules [69, 74, 75]. In the 5D interaction basis, where the bulk masses k C ij x are diagonal ( x = Q, U, D ; i, j = 1 , 2 , 3; k is the AdS curvature), the value f$_{x}$ i of the profile of the quark zero modes is given by Here c$_{x}$ i are the eigenvalues of the C$_{x}$ matrices, ϵ = exp[ − ξ ], ξ = log[ M$_{Pl}$/ TeV], and M$_{Pl}$ is the reduced Planck mass. If c$_{x}$ i < 1 / 2, then f$_{x}$ i is exponentially suppressed. Hence, order one variations in the 5D masses yield large hierarchies in the 4D flavor parameters. We consider the cases where the Higgs VEV either propagates in the bulk [76] or is localized on the IR brane. For a bulk Higgs case, the profile is given by ˜ v ( β, z ) ≃ v √ k (1 + β )¯ z 2+ $^{β}$/ϵ , where ¯ z ∈ ( ϵ, 1) (¯ z = 1 on the IR brane), and β ≥ 0. The β = 0 case describes a Higgs maximally-spread into the bulk (saturating the AdS stability bound [77]). The relevant part of the effective 4D Lagrangian, which involves the zero modes and the first KK gauge states can be approximated by [69, 74] where φ u,d = ˜ φ, φ , g$_{∗}$ stands for a generic effective gauge coupling and summation over i, j is implied. The correction for the couplings from the case of fully IR-localized KK and Higgs states is given by the functions r φ 00 [74] and r g 00 [78, 79]: where r φ $_{00}$( β, c$_{L}$, c$_{R}$ ) = 1 for brane-localized Higgs and x$_{1}$ ≈ 2 . 4 is the first root of the Bessel function, J$_{0}$ ( x$_{1}$ ) = 0. In Table VI we present an example of a set of f$_{x}$ i -values that, starting from anarchical 5D Yukawa couplings, reproduce the correct hierarchy of the flavor parameters. We assume, for simplicity, an IR localized Higgs. The values depend on two input parameters: f$_{U}$ 3 , which has been determined assuming a maximally localized t$_{R}$ ( c$_{u}$ 3 = − 0 . 5), and y$_{5D}$ , the overall scale of the 5D Yukawa couplings in units of k , which has been fixed to its maximal value assuming three KK states. On general grounds, the value of y$_{5D}$ is bounded from above, as a function of the number of KK levels, by the requirement that Yukawa interactions are perturbative below the cutoff of the theory, Λ$_{5D}$ ∼ N$_{KK}$k , and it is bounded from below in order to account for the large top mass. Hence the following range for y$_{5D}$ is obtained (see e.g. [76, 80]): f 2 x i = (1 − 2 c$_{x}$ i ) / (1 − ϵ 1 − 2 $^{c$_{x}$$_{i}$}$) . (6.4) L 4 D ⊃ ( Y u,d 5D )$_{ij}$ φ u,d ¯ Q$_{i}$f$_{Q}$$_{i}$ ( U, D )$_{j}$ f$_{U}$$_{j}$$_{,D}$$_{j}$r φ $_{00}$( β, c$_{Q}$$_{i}$, c$_{U}$$_{j}$$_{,D}$$_{j}$ ) + g$_{∗}$G $^{1}$x † $_{i}$x$_{i}$ [ f 2 x i r g $_{00}$( c$_{x}$ i ) − 1 /ξ ] , (6.5) r φ $_{00}$( β, c$_{L}$, c$_{R}$ ) ≈ √ 2(1 + β ) 2 + β − c$_{L}$ − c$_{R}$ , r g $_{00}$( c ) ≈ √$_{2}$ J$_{1}$ ( x$_{1}$ ) 0 . 7 6 − 4 c ( 1 + e c/ 2 ) , (6.6) 1 2 ≲ y$_{5D}$ ≲ 2 π N$_{KK}$ for brane Higgs ; 1 2 ≲ y$_{5D}$ ≲ 4 π √$_{N}$$_{KK}$ for bulk Higgs , (6.7) 24